Fortnite Earnings (how do I claim earnings

Hey. In this duos finals in world cup I placed roughly 960-980 duos, and I clearly won money.

It’s been two days, and I still don’t know what to do. Someone told me that I have to wait until world cup is over, but a friend of mine (not the person I earned money with) had previously won money from solos finals in world cup and since he had linked his support a creator with his credit card it went straight to his card.

I have only bought vbucks on my brothers card a long time ago. How do I claim my money, how long do I have to wait and anything else I should know?

Should I contact epic games asap?