CUNY Baruch and Hunter require an essay. You should receive the invitation via email giving you instructions on this next step. If you haven't received an email from either, please visit the Baruch link or email Hunter firstname.lastname@example.org
If you want to register for SAT exam or send your scores to colleges, go to The College Board If you used an SAT fee waiver you can send your scores for free to 4 schools. Make sure to send your scores to CUNY/UAPC (the CUNY central office).
If you want to register for ACT exam, go to ACT STUDENT