If you were eligible and applied before June 1st, then you should have received an email and update in Creator Studio with more information. If your application is being held for an additional review, then you'll get a second update in the near future: https://goo.gl/2icqfh
We review all applications carefully–if you weren’t accepted into YPP at this time then check your Monetization page in Creator Studio for more info: https://www.youtube.com/account_monetization …. You can make any changes based on those details and always reapply after 30 days.