You're probably talking about Peter's Pence collection contribution which is just pocket change (a few millions). Dioclesian revenue, lease income, Vatican's wealth fund generate billions. Lets not forget state support which the US doesn't have - for example if you register as a catholic in Germany 8-9% of your income tax goes to the church directly - to the tune of about 6 billion per year altogether.
> You're probably talking about Peter's Pence collection contribution which is just pocket change (a few millions).
Pocket change for sure (13.6 million/28.1%, says https://zenit.org/2024/06/30/the-ten-countries-that-made-the...), but there's also U.S. congregational giving of ~$20 billion, and the U.S. is the source of most large Catholic hospital, university, and foundation endowments.