Maybe tens of millions. Certainly a lot to us, not so much to Apple though I'm sure they want the money too (hence the whole lawsuit thing).

Epic was ordered to pay $6mm from the case that they lost which was sales from pre-installed apps over around a 3 month period [1]

  [1] https://www.macrumors.com/2021/09/13/epic-games-pays-apple-6-million/