Some players view setting screens as "gut work" with the 'glory' going to the ballhandler. Nothing can be farther from the truth.
Yes, the ballhandler should attack the basket first and the screen may inform separation for an open perimeter shot. But often the player most open will be the screener.
In this excellent, brief video, observe the roll, slip, and pop options for the screener. If you're hungry to score, learning to screen and to finish can help you pile up points. Just Google Karl Malone if you need proof.