health and attack not working

// Player Health
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

//Aaron barker, Jake Acworth
public class PlayerHealth : MonoBehaviour
{

    [SerializeField] private GameObject deathCanvas;
	int damage = 1;
    public GameObject[] health_Count = new GameObject[3];
    int maxHealth = 3;
    public Transform Player;
    //public PauseGame menu;


    private void Start()
    {
        deathCanvas.SetActive(false);
        //ealth_Count.maxValue = maxHealth;
        //Health_Count.value = maxHealth;
		damage = 1;
    }

    private void Update()
	{
		if (maxHealth == 0)
        {
			Die ();
		}
	}
	private void OnTriggerEnter(Collider other)
    {
			if (other.transform.tag == "Enemy")
        {
            Debug.Log("ouch");
            AttackPlayer();
        }
    }

    void Changelevel(string leveltoload)
    {
       // SceneManager.LoadScene("endDeath");
    }
    private void Die()
    {
		//SceneManager.LoadScene ("EndDeath");
        Time.timeScale = 0.0f;
        //deathCanvas.SetActive(true);
        Cursor.visible = true;
        Cursor.lockState = CursorLockMode.None;
        Player.GetComponent<TileMovement>().enabled = false;
        //menu.GetComponent<PauseMenu>().enabled = false;
    }

    public void AttackPlayer()
    {
        maxHealth -= damage;
        DestroyObject(health_Count[maxHealth]);
    }
}
//Player Health
//////////////////  Two different Scripts
//Enemy Attack
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EnemyAttack : MonoBehaviour
{

    public float Damage = 0.2f;
    public PlayerHealth playerhealth;
    public void Start()
    {
        playerhealth = GetComponent<PlayerHealth>();
    }
    private void OnTriggerEnter(Collider collision)
    {

        if (collision.gameObject.tag == "Player")
        {
            Debug.Log("This collider got hit");
            playerhealth.AttackPlayer();
        }
    }
}
//Enemy Attack