client-server architecture, is the connection - what's next?

Hi everyone.

Briefly what I produce:
The game takes place entirely on the server, without user participation.
You are breeding, preparing, training a pet (on client). You throw it on the server.
The end. You can only watch.

The server is linux, unrelated to Unity3D, without graphics.
The application in Unity is to be a client to visualize what is happening on the server.

(...changed...)

OK, a little went forward.
I have a TCP / IP connection, I can query the server through the browser.

How do you do it most extensively with Unity?

Thanks in advance,
Regards,
Kajetan

 

https://docs.unity3d.com/Manual/UNet.html