If you were eligible & applied before June 1st, then you should have received an email & update in Creator Studio with more info. If your application is being held for an additional review, you'll get a second update in the near future.
Dear Youtube Team According to YouTube policy a user must have 4000 watch hours and 1000 subscribers to enable monetization, As I have already reached 4000 Watch hours and also completed my 1000 Subscribers. My request you to please review my channel and enable monetizationpic.twitter.com/g1KkD3fxJI