Pretty much every school will consider your highest score, either single sitting or superscore.
Schools typically list the latest test date theywill accept, but that assume you autosend the scores. If you took the test at some point in the past but only sent the scores to them three days before the deadline, then you risk not having them received and factored in.
They’ll consider your higher score and ignore your lower one, but only if you submitted it on time. If it isn’t on time, they’ll only have your lower one to consider. “On time” definition is school-dependent.