How to: shoot bullets from an rotating object

Hello guys!! noob here. I am trying to develop a 2d game in unity.
I have a player in middle of the screen and a gun that is orbiting around him. How can I make the gun fire bullets in the direction of rotation? Right now i managed to make the bullets appear when click, but they dont come out of the gun. They come out from the same position everytime
this is the bullet script:

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class BulletScript : MonoBehaviour
{
    Rigidbody2D rb2d;
    
    void Start()
    {
        rb2d = GetComponent<Rigidbody2D>();
    }

    void FixedUpdate()
    {
        rb2d.velocity = new Vector3(0,3,0);
        //transform.Translate(0, Time.deltaTime * 10, 0);
        
    }
    
}

and this is the spawn bullet script:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ShootObject : MonoBehaviour
{
    public float m_speed;
    Object bulletRef;
    // Start is called before the first frame update
    void Start()
    {
        bulletRef = Resources.Load("Bullet");
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetButtonDown("Fire1"))
        {
            GameObject bullet = (GameObject)Instantiate(bulletRef);
            bullet.transform.localPosition = new Vector3(0,0,0);
            //bullet.transform.Translate(0, Time.deltaTime * 10, 0);
        }
    }
}

Your bullet script is a bit useless here, since you only need to set the velocity once if the drag is 0.

    GameObject bullet = (GameObject)Instantiate(bulletRef);
    bullet.transform.localPosition = new Vector3(0,0,0);
    bullet.GetComponent<RigidBody2D>().velocity = transform.right * bulletSpeed
    //or
    bullet.GetComponent<RigidBody2D>().velocity = transform.up * bulletSpeed

Chose which line depending on what is the forward axis of the gun.

If you need a bullet script that knows its velocity, do something like:

    bullet.GetComponent<Bullet>().SetVelocity(transform.up * bulletSpeed);