I need some help with changing a 3D text to the amount of battery life left on the flashlight, for my upcoming game. heres the code for battery life / flashlight

pragma strict

     public var maxBatteryLife: float = 100.0f;
     public var batteryLifeLostPerSecond: float = 3.0f;
     public var linkedLight: Light;
      
     public var currentBatteryLife: float;
      
     function Start() {
     currentBatteryLife = maxBatteryLife;
     }
      
     function Update() {
     if (Input.GetKeyDown("f")) {
     linkedLight.enabled = !linkedLight.enabled; // Toggles the light
     }
     if (linkedLight.enabled) {
     currentBatteryLife -= batteryLifeLostPerSecond * Time.deltaTime; // Reduces the battery correctly over time
     }
     if (currentBatteryLife <= 0) {
     linkedLight.enabled = false; // Keeps the light off when there is no power.
     }
     }

any ideas on where to place the code for it? and how to make that code?