rabidus-test/Assets/Scripts/EnergyController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;

public class EnergyController : MonoBehaviour, ITextChangable
{
    [SerializeField]
    private float _energy;

    public UnityEvent<object> OnTextChange => _OnTextChange;
    private UnityEvent<object> _OnTextChange = new UnityEvent<object>();

    public float Energy
    {
        get => _energy;
        set
        {
            _energy = value;
            _OnTextChange?.Invoke(_energy);
        } 
    }
}