yo! I work at McDonalds as of recently and it's honestly all online stuff *AND* you go in person most of the time,
you fill out an online application and then you go in person, it's the same for most fast food places unless they specify they're doing on site ones which means they'll interview you there and then
fair warning you will need an ID or student ID, and a social security card for orientation if you end up getting through ! wishing you the best of luck
(student ID's, if your school odesnt give you an actual ID card just ask your guidance counselor or equivalent for something that has at least your updated school picture on it like a transcript, they just need it for a picture incase of some freak accident happens lol)