DestroyOfColision_2.cs

using UnityEngine;
using UnityEngine.UI;

public class DestroyOfColision_2 : MonoBehaviour
{
    private static int score = 0;
    public Slider hungerSlider;
    public int foodToFill = 5; 
    private int currentFood = 0;

    void Start()
    {
        hungerSlider.maxValue = foodToFill;

        hungerSlider.value = 0;
        
        hungerSlider.gameObject.SetActive(true);
        
    }
    void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("GameController"))
        {
            currentFood++;
            hungerSlider.value = currentFood;
            
            Destroy(other.gameObject);
        }

        if (currentFood >= foodToFill)
        {
            score++;
            Debug.Log("Your score is: " + score);
            hungerSlider.gameObject.SetActive(false);
            Destroy(gameObject);
            Destroy(other.gameObject);
        }
       
    }
      
  }