script movement unity 2d

`I tried to write the code for the moving of my person of Unity 2D version 5.6 but I get this error. you know help me? sorry for my English [RequireComponent (typeof (Rigidbody2D))] public class PlayerMovement : MonoBehaviour {

     Rigidbody2D body;
 
     //Variabili upgradabili
     float moveSpeed - 3f;
 
     // Use this for initialization
     void Start () {
         body - GetComponent<Rigidbody2D> ();
         
     }
     
     // Update is called once per frame
     void Update () {
         Movement ();
     }
 
     void Movement()
     (
         float h - Input.GetAxis(" Horizontal ");
         Vector2 AudioVelocityUpdateMode = new Vector2(Vector2.right.x " MoveSpeed " h, body.velocity.y);
 
         body.velocity = velocity;
 
 
     )
 }