WildRoot/Assets/Script/BulletSpawner.cs

using UnityEngine;

public class BulletSpawner : MonoBehaviour
{
    public GameObject prefab;

    public float bulletSpeed = 8f;

    Transform target;


    public float min = 0.5f;
    public float max = 3f;

    float rate;
    float time;

    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        time = 0f;
        rate = Random.Range(min, max);

        target = FindFirstObjectByType<PlayerController>().transform;
    }

    // Update is called once per frame
    void Update()
    {
        time += Time.deltaTime;

        if(time >= rate)
        {
            time = 0f;

            rate = Random.Range(min, max);

            GameObject obj = Instantiate(prefab, transform.position, transform.rotation);
            obj.transform.LookAt(target);

            Bullet bulletScript = obj.GetComponent<Bullet>();
            if (bulletScript != null)
            {
                bulletScript.speed = bulletSpeed;
            }
        }
    }
}