There's a FAQ section with commonly asked questions on the site where you send and pay to send your PCAT scores. I believe the last question on that page is the same one you're asking and the answer they gave was ONLY send your pcat scores to schools you are applying to that DO NOT use PharmCAS. Any school that does use PharmCAS will get your score from PharmCAS directly.
So if you're only applying to schools that use PharmCAS, just have your score sent to them and you'll only be charged $20.00