MLAPI score UI player dependent

I am remaking my old couch multiplayer game into an online multiplayer.
This is way harder to wrap my head around it. I am looking for something specific but I can't really find anything on google.
What I want is: 2-8 players can join and fight each other. Each player has a score that increment per kill and all these scores are visible for all players in a UI.

So I have a ServerRPC that handles all melee attacks. This sits on my player object.
I can check what clientID attacked someone and if it dies. I tried so use a networkvariable to increment the score in a scoreManager game object that is running on the server, but so far this is not working.
Now these netvars work for things like health per player, but for score I am confused, because the score UI is not on the player but it should be grouped in 1 canvas on the score manager.
I don't know how I can keep the score per player and put it in a dynamic UI (2 to 8 textfields)

I was thinking of making an array that writes the netvar to an index, but this also has to be dynamic and I would love to have some input about this. Any help is greatly appriciated.

I am new to all this, here is all the code related to this. If there is anything else I need to provide/

Melee script:

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3. using System.Collections;
4. using UnitySampleAssets._2D;
5. using System.Collections.Generic;
6. using MLAPI;
7. using MLAPI.NetworkVariable;
8. using MLAPI.Messaging;
9. using System;
10.  
11. public class Melee : NetworkBehaviour
12. {
13.     public Transform swordClashPrefab;
14.     public List<GameObject> meleeColliders = new List<GameObject>();
15.     private PlatformerCharacter2D character; //Character that is melee attacking
16.     private Animator anim;
17.     public ScoreManager scoreManager;
18.  
19.     public Image cooldownBar;
20.     public float fillAmount = 1.0f;
21.  
22.     //Network Variables
23.     public NetworkVariableBool net_meleeAttack = new NetworkVariableBool();         // For determining if the player is attacking with melee over the network
24.     public NetworkVariableVector3 net_colPos = new NetworkVariableVector3();
25.     public NetworkVariableQuaternion net_colRot = new NetworkVariableQuaternion();
26.  
27.     //Variables
28.     public bool meleeAttack = false;
29.     float meleeAttDelay;
30.     public float fastMeleeAttSpd = 0.25f; //Time between 2 attacks in seconds while your attack speed is boosted
31.     public float normalMeleeAttSpd = 0.5f; //Time between 2 attacks in seconds for normal attacks
32.     public float lastMeleeAttTimer = -999f;
33.  
34.     private void Awake()
35.     {
36.         character = gameObject.transform.parent.gameObject.GetComponent<PlatformerCharacter2D>();
37.         anim = gameObject.transform.parent.gameObject.GetComponent<Animator>(); //so we can do the melee animation
38.         scoreManager = GameObject.Find("ScoreManager").GetComponent<ScoreManager>();
39.     }
40.  
41.         void OnTriggerStay2D(Collider2D col)
42.     {
43.         if (!meleeColliders.Contains(col.gameObject))
44.             meleeColliders.Add(col.gameObject);
45.     }
46.  
47.     void OnTriggerExit2D(Collider2D col)
48.     {
49.         if (meleeColliders.Contains(col.gameObject))
50.             meleeColliders.Remove(col.gameObject);
51.     }
52.  
53.     public void doMelee(bool melee = false, bool fasterMelee = false)
54.     {
55.         //If player is using melee set it to true, but we don't reset the variable here, this we handle in the melee script
56.         if (meleeAttack == false && IsLocalPlayer)
57.         {
58.             if (fasterMelee){meleeAttDelay = fastMeleeAttSpd; } //double attack speed
59.             else { meleeAttDelay = normalMeleeAttSpd; }            //normal attack rate
60.  
61.             if (melee && Time.time > lastMeleeAttTimer + meleeAttDelay) //we add a delay to the melee to balance it
62.             {
63.                 lastMeleeAttTimer = Time.time;
64.  
65.                 anim.SetBool("Melee Horizontal", true); //Start the animation
66.                 meleeAttack = true;  
67.                 UpdateMeleeServerRPC(true);
68.  
69.             }
70.             else
71.             {
72.                 anim.SetBool("Melee Horizontal", false);
73.                 meleeAttack = false;
74.                 UpdateMeleeServerRPC(false);
75.             }
76.         }
77.     }
78.  
79.     private void Update()
80.     {
81.         fillAmount = (Time.time- lastMeleeAttTimer) / meleeAttDelay;
82.         cooldownBar.fillAmount = fillAmount;
83.     }
84.  
85.     void FixedUpdate()
86.     {
87.             MeleeHandlerServerRPC();
88.  
89.             if (meleeColliders.Count > 0)
90.             {
91.                     Vector3 colPos = net_colPos.Value;
92.                     Quaternion colRot = net_colRot.Value;
93.  
94.                     //First test if we are actually melee attacking
95.                     if (net_meleeAttack.Value || (IsLocalPlayer && meleeAttack))
96.                     {
97.                         float direction = character.net_updateScale.Value.x;
98.  
99.                         if (swordClashPrefab.gameObject != null)
100.                         {
101.                             Transform _swordClashPrefab = Instantiate(swordClashPrefab, gameObject.transform.position + new Vector3(8 * direction, 0, 0), gameObject.transform.rotation) as Transform;
102.                             Destroy(_swordClashPrefab.gameObject, 1f);
103.                         }
104.                     }
105.                 UpdateMeleeServerRPC(meleeAttack);
106.             }
107.             //RESET THE MELEE VARIABLE SO WE CAN CALL IT AGAIN
108.             meleeAttack = false;
109.        
110.     }
111.  
112.     [ServerRpc]
113.     void UpdateMeleeServerRPC(bool netMeleeAttack)
114.     {
115.         net_meleeAttack.Value = netMeleeAttack;
116.     }
117.  
118.     [ServerRpc]
119.     void MeleeHandlerServerRPC()
120.     {
121.         if (meleeColliders.Count > 0)
122.         {
123.             for (int i = meleeColliders.Count - 1; i >= 0; i--)
124.             {
125.                 if (meleeColliders.Count < i) { continue; }
126.  
127.                 GameObject col = meleeColliders[i];
128.  
129.                 if (col.gameObject == null) { continue; }
130.  
131.                 net_colPos.Value = col.transform.position;
132.                 net_colRot.Value = col.transform.rotation;
133.  
134.                 //First test if we are actually melee attacking
135.                 if (net_meleeAttack.Value)
136.                 {
137.                     //Here we will do damage to the hit object / player
138.                     var player = col.gameObject.GetComponent<PlayerHealth>();
139.                     if (player != null)
140.                     {
141.                         bool killed = player.TakeDamage(50);
142.                         Debug.Log("Player " + OwnerClientId + " score = + 1");
143.                         scoreManager.UpdateScore(killed);
144.                     }
145.  
146.                         Debug.Log("Player " + OwnerClientId + " score = " + scoreManager.net_playerScore.Value);
147.                         //should also add something for objects.
148.                     }
149.             }
150.         }
151.     }
152. }

ScoreManager Script

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3. using System.Collections;
4. using UnitySampleAssets._2D;
5. using System.Collections.Generic;
6. using MLAPI;
7. using MLAPI.NetworkVariable;
8. using MLAPI.Messaging;
9. using System;
10.  
11. public class ScoreManager : NetworkBehaviour
12. {
13.             //Network Variables
14.             public NetworkVariableInt net_playerScore = new NetworkVariableInt(0);
15.  
16.             public void UpdateScore(bool playerScoreIncrement)
17.             {
18.                 UpdateScoreServerRPC(playerScoreIncrement);
19.             }
20.  
21.             [ServerRpc]
22.              void UpdateScoreServerRPC(bool netplayerScoreIncrement)
23.             {
24.                 if (netplayerScoreIncrement)
25.                 {
26.                     net_playerScore.Value += 1;
27.                 }
28.             }
29.  
30. }
31.