how do i make the brush single? my brush on the sculpting menu every time i try to sculpt it makes a copy on the other side. i just want it to be single


as you can see you have the circle with the dot telling you were the mouse is to draw. but there's a secondary dot. 

how do i get rid of it so i can make a single sculpt without it duplicating on the other side
It is mirror. In tool settings deactivate this option by pressing button X: 



If you haven't this toolbar, enable it in menu View -> Tool Settings