How to get a sprite to move in the direction it is facing .

I am creating a game where a player in the middle of the screen rotates and fires a gun at enemies coming at him from the edges. I am trying to get the bullet when fired to move in the direction it is facing.

This is only moving the Z axis.

 public class BulletMovement : MonoBehaviour {
 
     public float moveSpeed;
 
     private void FixedUpdate()
     {
         transform.position += transform.forward * Time.deltaTime * moveSpeed;
     }
 }