I need help!!!

Hello, I'm trying to create a game of 3D points and boxes, but I don't have much programming knowledge and here's a 2D script that I found and was trying to "adapt" to my project, but it didn't work if someone can help me I would be grateful

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

// pls use Transform instead of GameObject :: Important!!!!

public class GameSetup : MonoBehaviour
{




// object
public Transform vertical;
public Transform horizontal;
public Transform box;


// Main camera
public Camera mainCam;

// Board Size
public static int board_Width ;
public static int board_Height ;

// Board Position



// Structure of game
public static Transform[,] vertical_line;
public static Transform[,] horizontal_line;
public static Transform[,] boxs;

public Button btn_reset;
public Button btn_config;
/// let user intialize the size
///

void Start()
{


CreateBoard(board_Width,board_Height);



}

// Update is called once per frame
void Update()
{

}

// Create Tic tac toe board
void CreateBoard(int board_Width, int board_Height)
{


float vertical_Line_Width = vertical.GetComponent<SpriteRenderer>().bounds.size.x;
float vertical_Line_Height = vertical.GetComponent<SpriteRenderer>().bounds.size.y;

float horizontal_Line_Width = horizontal.GetComponent<SpriteRenderer>().bounds.size.x;
float horizontal_Line_Height = horizontal.GetComponent<SpriteRenderer>().bounds.size.y;

float box_Width = box.GetComponent<SpriteRenderer>().bounds.size.x;
float box_Height = box.GetComponent<SpriteRenderer>().bounds.size.y;





//float pixel_board_width = mainCam.ScreenToWorldPoint(new Vector3((board_Width * horizontal_Line_Width + (board_Width + 1) *
// vertical_Line_Width) / 2, 0, 0f)).x;

// float pixel_board_height = mainCam.ScreenToWorldPoint(new Vector3(0, (board_Height * vertical_Line_Height + (board_Height + 1) *
//horizontal_Line_Height) / 2 , 0f)).y;

// float pix_vertical_width = vertical.GetComponent<SpriteRenderer>().sprite.rect.width;
// float pix_vertical_height = vertical.GetComponent<SpriteRenderer>().sprite.rect.height;
// float pix_horizontal_width = horizontal.GetComponent<SpriteRenderer>().sprite.rect.width;
// float pix_horizontal_height = vertical.GetComponent<SpriteRenderer>().sprite.rect.height;

//float startX = Screen.width / 2 - (board_Width * pix_horizontal_width + (board_Width + 1) * pix_vertical_width) / 2;
// float startY = Screen.height / 2 + (board_Height * pix_vertical_height + (board_Height + 1) * pix_horizontal_height) / 2;

float startX = Screen.width / 2;
float startY = Screen.height / 2;
// Debug.Log((board_Width * pix_horizontal_width + (board_Width + 1) * pix_vertical_width) / 2);


//initial game object structure

vertical_line = new Transform[board_Width + 1, board_Height];
horizontal_line = new Transform[board_Width, board_Height + 1];
boxs = new Transform[board_Width, board_Height];



float yCor = mainCam.ScreenToWorldPoint(new Vector3(0, startY, 0f)).y;
// middle screen
yCor = yCor + (board_Height * vertical_Line_Height + (board_Height + 1) * horizontal_Line_Height) / 2;
for (int y = 0; y <= board_Height; y++)
{
float xCor = mainCam.ScreenToWorldPoint(new Vector3(startX, 0, 0f)).x;
//middle screen
xCor = xCor - (board_Width * horizontal_Line_Width + (board_Width + 1) * vertical_Line_Width) / 2;
// check.text = "x = " + xCor + " y = " + yCor;
for (int x = 0; x <= board_Width; x++)
{
Vector3 center_of_Box = new Vector3(xCor, yCor, 0f);
Vector3 center_of_Vertical = new Vector3(xCor - horizontal_Line_Width / 2 - vertical_Line_Width / 2, yCor, 0f);
Vector3 center_of_Horizontal = new Vector3(xCor, yCor + horizontal_Line_Height / 2 + vertical_Line_Height / 2, 0f);

if (x != board_Width && y != board_Height)
boxs[x, y] = Instantiate(box, center_of_Box, Quaternion.identity) as Transform;

if (y != board_Height)

vertical_line[x, y] = Instantiate(vertical, center_of_Vertical, Quaternion.identity) as Transform;



if (x != board_Width)
horizontal_line[x, y] = Instantiate(horizontal, center_of_Horizontal, Quaternion.identity) as Transform;

xCor += box_Width + vertical_Line_Width;
}
yCor -= box_Height + horizontal_Line_Height;
}
}

public void OnClick()
{
Application.LoadLevel(1);
}

public void ChangeScene(int scene_id)
{

SceneManager.LoadScene(scene_id);
}


}

 

Please use code tags, so we can read the code much easier.

Also what is the problem? Can't help you when we don't know whats happening.