How can I change mouse clicks to keyboard in order to enable a capsule collider?

Hi!, I've been looking for some 3D whack a mole tutorials online, most of them using clicks to hit a capsule collider when a mole come up, so I want to change the click inputs for keyboards, in order that the user can press 'A' Keyboard to hit the mole in the tagged hole "Hole_A" and keyboard 'S' for the tagged 'Hole_S' and so, but I don't know how to do it, if someone want to help me I'll be thankful to you, english is not my native lenguague sorry for that.

        //------MOUSE--------------//

         //if (Input.GetMouseButtonDown(0))
         //{
 
         //    Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
         //    RaycastHit hit;
 
         //    Vector3 point = ray.origin + (ray.direction * (4.5f));
 
         //    GameObject obj = GameObject.FindWithTag("Hole_A");
         //    Debug.Log("World point " + point);
 
 
         //    if (Physics.Raycast(ray, out hit))
         //    {
         //        if (hit.collider.tag == "Mole")
         //        {
         //            KlonkSound.Play();
         //            Instantiate(fx_Stars, hit.point, Quaternion.identity);
 
         //            Debug.Log("posicion hoyo A: " + obj.transform.position);
         //            //Debug.Log("posicion: " + Input.mousePosition);
         //            DestroyMe mole = hit.collider.gameObject.GetComponent<DestroyMe>();
         //            mole.SwitchCollider(0); 
         //            mole.anim.SetTrigger("hit"); 
 
         //            //Debug.Log(hit.collider.gameObject + "got hit");
         //        }
 
         //    }
 
 
         //}

//-------WHAT I WANT TO DO WITH KEYBOARDS (WRONG CODE SAMPLE)----------//

//GameObject obj = GameObject.FindWithTag("Hole_A"); //if (Input.GetKeyDown(KeyCode.A) && positionHoleA) //{

     //    Ray ray = obj.transform.position;
     //    RaycastHit hit;

     //    if (ray.collider.tag == "Mole")
     //        {

     //            KlonkSound.Play();
     //            Instantiate(fx_Stars, new Vector3(1, 0.5f, 0), Quaternion.identity);
     //            DestroyMe mole = new DestroyMe();
     //            mole.anim.SetTrigger("hit");

     //        }

 

     //}