How to make the player die when health = 0?

Questions & Answers
1

How to make the player die when health = 0?

2

Depending on how you structured the game
Personally, I would use the update method to check whether the health of the player is less than or equal to zero. If its true, I can play a die animation or I can transfer the game to a Game Over Scene

here’s the way i would do it

//include this at the top of the script
using UnityEngine.SceneManagement;


//On your player class where the health variable is sitting

void Update(){
if(health <= 0){
//using the game over scene method 
SceneLoader.LoadScene("GameOver");
}

}

You will need a Scene named GameOver for this to work and include it in the player settings.
again this depends on your structure and what you want to do when the player dies.
Some snippet of your code can really help.