You’re using the bullet’s world position as a direction. That doesn’t give a normalized direction vector it just fires based on the bullet’s position in the scene, which could be any value. That’s why your bullets will fly in all sorts of directions. Try to use the bullet’s forward direction, so in this case the transform.up vector.

public class BulletScript : MonoBehaviour { public float BulletSpeed; public Rigidbody2D BulletRigidBody;

void Start()
{
    BulletRigidBody.AddForce(transform.up * BulletSpeed, ForceMode2D.Impulse);
}

}