720 Bio Ecological or 720 Chem subject tests worth retaking?

I’m a rising senior who is looking to double major in business and engineering. I’m looking at applying to top schools such as UPenn, so are my lower scores in science SAT subject tests worth retaking? I have a 720 in Bio E and a 720 in Chem.

I’m not sure if its worth all the time to relearn chem or bio, and I have an 800 Math II and a 750 US History right now. Would appreciate any input!

For most schools (except Georgetown and a few others) they only recommend/require 2 subject tests. You have great scores for Math 2 and US History. I do not think you need to even send the other ones, only if the school requires you to. Don’t stress as you already have an 800 and a 750. Focus on your essays.