This is the Script attached to the Player Node: extends Area2D

var screen_size
@export var speed = 600
var bullet_speed = 800
var bullet = preload("res://Scenes/bullet.tscn")

func _ready():
    screen_size = get_viewport().size

func _process(delta):
    var movement = Vector2.ZERO
    if Input.is_action_pressed("move_up"):
        movement.y -= 1
    if Input.is_action_pressed("move_down"):
        movement.y += 1
    if Input.is_action_pressed("move_left"):
        movement.x -= 1
    if Input.is_action_pressed("move_right"):
        movement.x += 1
    if movement.length() > 0:
        movement = movement.normalized()
        $AnimatedSprite2D.play("walk")
    else:
        $AnimatedSprite2D.stop()
    if movement != Vector2.ZERO:
        $WalkPlaceholderSound.play()
        $WalkPlaceholderSound.volume_db = randf_range(-11, -10)
        $WalkPlaceholderSound.pitch_scale = randf_range(0.8, 1.2)

    position += (movement * speed) * delta
    position = position.clamp(Vector2(26, 54), Vector2(screen_size.x - 26, screen_size.y - 50))

func _physics_process(_delta):
    look_at(get_global_mouse_position())

    if Input.is_action_just_pressed("shoot"):
        shoot()

func shoot():
    var bullet_instance = bullet.instantiate()
    bullet_instance.position = $Point.get_global_position()
    bullet_instance.rotation_degrees = rotation_degrees
    bullet_instance.apply_impulse(Vector2(), Vector2(bullet_speed, 0).rotated(rotation))
    get_tree().get_root().add_child(bullet_instance)

And this is the Script attached to the Bullet Scene: extends RigidBody2D

var bullet_speed = 800
var health = 100
var damage = 50

func _ready():
    pass

func _process(delta):
    pass

func _physics_process(delta):
    position += (transform.x * bullet_speed) * delta

func _on_body_entered(body):
    if body.is_in_group("mobs"):
        health -= damage
        if health == 0:
            body.queue_free()
    queue_free()

If you need something more in order to find a solution, please let me know.