This is one of the most fiddly things I've done to date out here: A technique I picked up from an organic methods article to help achieve apples that are neither full of bugs (big No Want), or hopelessly scarred (eh, whatever, I ain't selling to no supermarket - long as the flavor is good, they can be as fugly as they like).
So, you take Ziplock sandwich bags, zip them around your budding apples, poke a couple small holes for drainage, and there you are. Hopefully, these protected fruits will be worm-free and unblemished.
And it took approximately forever to do just a couple dozen 'test apples.'
Which is probably why a supermarket organic apple of perfect skin is so danged price. I can't imagine doing a whole tree, let alone a whole ORCHARD!
(Our bug problem is epic this year. LOTS of 100% crop death. Bitter reminder about why it was that we humans worked so hard to develop the pesticides we now disdain...)