Hello back, most channels hear back in less than 30 days. Each application is manually reviewed, so it does take a bit of time! Hope you hear back soon – in the meantime, here’s a bit more info about the review process: https://yt.be/help/YPP-review
If you haven't heard back yet, this usually means your channel is being held for additional reviews and we'll be putting more effort/resources into making the final decision: https://yt.be/help/YPP-review . Thanks for your continued patience.