Need a simple health script

Need a script to attach to my player where every collision occurs with the player-object its heath decreases by 1 out of 10 and when it reaches 0 the player is destroyed(i.e. dies). I’m having a problem with OnCollision method so a small workable script would be enough.
Thank You.

using UnityEngine;

public class Player : MonoBehaviour {
    public float health = 10f;

    void OnCollisionEnter(Collision collisionInfo)
    {
        if (collisionInfo.collider.gameObject.tag == "SetTagOfObjectHereAndInEditor")
        {
             health -= 1f;
        }
    }

    void Update() {
        if (health <= 0f)
        {
             // Player is dead. Delete him here etc...
        }
    }
}

Set The Player collider to trigger.
Add box collider to enemy
This will kill the player when trigger with the enemy