That's only servers - they still need developers, managers, reviewers etc.. Apple surely does not make a loss, but the server bill is probably a negligible part of the cost.
> In 2020, customers spent an estimated 72.3 billion U.S. dollars on on in-app purchases, subscriptions, and premium apps in the Apple App Store.
The App Store is a money printer for Apple, that's how low their operating expenses are. It's rent-seeking at its best, abusive landlords would be proud of them :-)