How to make 2d shotgun?

Questions & Answers
1

Im making a game where waves of enemies spawn and you have to shoot them to win and i want to make a shotgun but i dont know how. How i would like it is you buy it in a menu (i could do that myself) and then when its equipped it sprays 6-10 bullets in front of you. Heres my scripts for shooting.using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Shooting : MonoBehaviour
{
private Camera mainCam;
private Vector3 mousePos;
public GameObject bullet;
public Transform gun;
public bool canFire;
private float timer;
public float timeBetweenFiring;

// Start is called before the first frame update
void Start()
{
    mainCam = GameObject.Find("Main Camera").GetComponent<Camera>();
}

// Update is called once per frame
void Update()
{
    mousePos = mainCam.ScreenToWorldPoint(Input.mousePosition);

    Vector3 rotation = mousePos - transform.position;

    float rotZ = Mathf.Atan2(rotation.y, rotation.x) * Mathf.Rad2Deg;

    transform.rotation = Quaternion.Euler(0, 0, rotZ);

    if (!canFire)
    {
        timer += Time.deltaTime;
        if (timer > timeBetweenFiring )
        {
            canFire = true;
            timer = 0;
        }
    }

    if (Input.GetMouseButton(0) && canFire)
    {
        canFire = false;
        Instantiate(bullet, gun.position, Quaternion.identity);
    }
}

}
thats 1:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BulletScript : MonoBehaviour
{
private Vector3 mousePos;
private Camera mainCam;
private Rigidbody2D rb;
public float force;

// Start is called before the first frame update
void Start()
{
    mainCam = GameObject.Find("Main Camera").GetComponent<Camera>();
    rb = GetComponent<Rigidbody2D>();
    mousePos = mainCam.ScreenToWorldPoint(Input.mousePosition);
    Vector3 direction = mousePos - transform.position;
    Vector3 rotation = transform.position - mousePos;
    rb.velocity = new Vector2(direction.x, direction.y).normalized * force;
    float rot = Mathf.Atan2(rotation.x, rotation.y) * Mathf.Rad2Deg;
    transform.rotation = Quaternion.Euler(0, 0, rot);
}

// Update is called once per frame
void Update()
{
    
}

private void OnTriggerEnter2D(Collider2D collision)
{
    if (collision.gameObject.CompareTag("Out"))
    {
        Destroy(gameObject);
    }
}

}
thats 2. yeah pls help