PlayerJump

void Update()
{
    int i = 0;
    while (i < Input.touchCount)
    {
        if(Input.GetTouch(i).phase == TouchPhase.Began)
        {
            RaycastHit2D hit = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.GetTouch(i).position), -Vector2.up);
            if(hit.collider.tag == "panel" && GroundCheck.isGrounded)
            {
                jump = !jump;
            }
        }
        ++i;
    }
}

void FixedUpdate()
{
    if(jump)
    {
        r.AddForce(Vector2.up * jumpSeed, ForceMode2D.Force);
        jump = !jump;
    }
}