This game is not yet released and not all details are known
Microtransactions in Hogwarts Legacy are summarized as...
There will be a pre-order deluxe edtion that contains cosmetics, early access, and other non-cosmetics items. It is not yet known if the game will contain any cosmetics beyond this package.
👎You can (or could) gain early-access to the game by spending more money.
➖Has a "deluxe" edition of the game which features (almost) nothing but in-game cosmetic items.
➖Features unique cosmetic rewards for pre-ordering the game.