VRChat U# Integer Sync Example

IntSetting.cs

using UdonSharp;
using UnityEngine;
using VRC.SDKBase;

[UdonBehaviourSyncMode(BehaviourSyncMode.Manual)]
public class IntSetting : UdonSharpBehaviour
{
    [SerializeField, UdonSynced] private int valueSync;

    public void SetValue(int newValue)
    {
        Networking.SetOwner(Networking.LocalPlayer, gameObject);
        valueSync = newValue;
        RequestSerialization();
        ApplyValue();
    }

    public override void OnDeserialization()
    {
        ApplyValue();
    }

    private void ApplyValue()
    {
        // React to the value changing here!
        // Like if the number were a score, you'd update the scoreboard here.
    }
}