ScreenPointToRayExample.cs

void Update()
    {
        foreach (Touch _touch in TouchScreenInputWrapper.touches)
        {
            if (_touch.phase == TouchPhase.Began) {
                Ray ray = Camera.main.ScreenPointToRay(_touch.position);
                //This can show the ray in the editor scene windows.
                Debug.DrawRay(ray.origin, ray.direction * 10, Color.yellow, duration: 3);
                RaycastHit hit;
                Physics.Raycast(ray: ray, hitInfo: out hit, maxDistance: 100);
                //This will be the destination position for the player
                Vector3 targetPosition = hit.point;

                //After getting the destination position, you may want to use Transform.LookAt() to face the destination, 
                //and use Transform.foward to get the foword vector, and then apply it as the force for rigidbody
            }
        }
    }