From what I can tell, 32 is actually close to the median score for quite a few of the Ivies (Cornell, Dartmouth, Brown, Penn) and it’s at the 25th percentile for the others. So, your score is in the ballpark. If you’re asking what would a higher score do, say, 33 or 34? That would put you in the middle range for HYP. (Actually you may be in the mid range for Princeton). I don’t know if the effort in studying (and stressing) will significantly increase your chances. Put it this way, what does increasing your chances from 4% (slightly lower acceptance rate) to 10% (slightly higher acceptance) do?
I would work on your application - figure out how best to present yourself to colleges. Read http://talk.collegeconfidential.com/college-admissions/1891200-asian-rejected-from-everywhere-postmortem.html#latest. The poster has good advice to someone like you. Don’t stress over being first or second or third (or seventh) in your class.