From my experience, in my other channel I made few bucks there (YouTube) until that channel was dropped because it didn't meet the requirements. I thought I could still get my earnings even if they drop my partnership with them. If I understood it right, even if you reach $100 like my other dropped channel. I never get any and it just stays there as in on YouTube dashboard and not even transferred to my Adsense account. I guess, they'll pay you once you reach their requirements and become a partner again with Adsense.