What most high schoolers fail to realize is that there's a certain threshold for the SAT, and above that, scores don't matter! I'm in Penn now, btw.
Each section should roughly be around a 750 for you to be safe-This also depends on your ethnicity and other factors, but if you are not a minority applicant, a composite 2250 is solid, and generally regarded as the mark to have.
So retake, focus, and do well! It can be done-I went from a 2220 to a 2380, and haven't looked back since!
Feel free to PM for further questions, and best wishes!