How do I change the scale character for flip his face,How do I change the scale of character for flip his face

{ Rigidbody2D playerRB; public float moveSpeed = 3f;

 bool facingRight = true;
 



 // Start is called before the first frame update
 void Start()
 {
     playerRB = GetComponent<Rigidbody2D>();
     

 }

 // Update is called once per frame
 void Update()
 {


     playerRB.velocity = new Vector2(Input.GetAxis("Horizontal") * moveSpeed, playerRB.velocity.y);

     if (playerRB.velocity.x < 0 && facingRight)
     {
         
     }
     else if (playerRB.velocity.x > 0 && !facingRight)
     {
        
     }, Rigidbody2D playerRB;
 public float moveSpeed = 3f;
 

 bool facingRight = true;
 void Awake()
 {



 }





 // Start is called before the first frame update
 void Start()
 {
     playerRB = GetComponent<Rigidbody2D>();
     

 }

 // Update is called once per frame
 void Update()
 {


     playerRB.velocity = new Vector2(Input.GetAxis("Horizontal") * moveSpeed, playerRB.velocity.y);

     if (playerRB.velocity.x < 0 && facingRight)
     {
         
     }
     else if (playerRB.velocity.x > 0 && !facingRight)
     {
        
     }



 }