As Michael and RogueNinja have already mentioned it you can easily count a few Days or even Weeks till you could get a Replay from YouTube. Most of the Time their Team will put your Video on a Watch List and compare how much Views it get in X Days and from what Region those are. If you have an new Channel and YouTube doesn`t have yet any experience with you they might even tell you that they won`t Monetize it.
I had a similar Case at the Beginning where my Trailers where hitting 20.000 - 30.000 Views each Week but simple couldn`t get them monetize because the YouTube Partner-/Monetize Program weren`t available at that Time in my Country.
Just give them some Time it might be worth it.