I agree with Purplesofa, perfection is the label we apply to things that fulfill an intended outcome.
It relates to desire. Things that fulfill a desire are "perfect". Things that don't fulfill a desire are not. And what fulfills one person's desire may not fulfill another person's desire. Thus "perfection" can only assessed in regards to a subjective standard.
Perfection isn't a property or value that things can possess. It's a correlation between what we want(ed) and what actually is.