Apple has to allow third party developers to communicate that they can get better prices outside the App Store, and has to allow links to websites where you can get those prices. All the rest of the relief Epic asked for was denied.
This means Epic is not allowed to do what it tried to do (have in app purchasing go to its own payment processing), isn’t allowed to be an App Store itself, etc.
It’s also not clear, but there are reasons to believe, that the judge would allow apple to demand a percentage of any out-of-IAP purchases - apple could accomplish this by amending the developer agreement, adding an audit provision, etc.