GP7_GAMEN4_Target_Shooter_Unity/Assets/myScript/Bullet.cs

using UnityEngine;

public class Bullet : MonoBehaviour
{
    public float speed = 20f;

    void Update()
    {
        transform.Translate(Vector3.forward * speed * Time.deltaTime);
        Destroy(gameObject, 3f);// Destroy bullet after 3s
    }

    void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("Target"))
        {
            other.GetComponent<Target>().TakeDamage();
            Destroy(gameObject);
        }
    }
}