how do i move a object with direction of touch

hi , i am very beginner of game developing. i am developing a game where i have a ball and i want to move it by touch just like a soccer game where ball can move by the direction of touch but its move only forward direction and here is my code. plz help me. thank you

 public float ThroughSpped;
 public float ArchSpped;

void OnMouseDown() {

         distance = Vector3.Distance (transform.position, Camera.main.transform.position);
         Dragging = true;
         
     }

     public void OnMouseUp()
     {
         //Instantiate(this) ;

         this.GetComponent<Rigidbody> ().useGravity = true;
 
 
 
     this.GetComponent<Rigidbody> ().velocity += this.transform.forward*ThroughSpped;
         this.GetComponent<Rigidbody> ().velocity += this.transform.up*ArchSpped;
         Dragging = false;
 
     }
     
 void DraggingBall()
 {
     if (Dragging) 

     {


         Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);
         Vector3 raypoint = ray.GetPoint (distance);
         transform.position = Vector3.Lerp (this.transform.position, raypoint, Speed * Time.deltaTime);
         Destroy(BallPrefabClone, 1f);
     }
 }