Move object faster when the screen is tapped repeatedly

Hello, I'm trying to move a 2d object upwards by tapping the screen. This is what I have so far.

 if ((Input.GetKey(KeyCode.UpArrow) || (Input.touchCount > 0 && Input.GetTouch(0).phase== TouchPhase.Began)) && levelCompleted == false) {
 
 
 locVel=transform.InverseTransformDirection(rigidbody2D.velocity);

 locVel.y = locVelY;
             
 rigidbody2D.velocity = transform.TransformDirection(locVel);
 
 
 
 }

This script moves the object up in the same velocity when tapped. But I want the object to move faster when tapped repeatedly. How to achieve this ? . Your help would be highly appreciated.

Thank you.