Hey there, we'd like to know more. Visit here and send us the screenshot of the page that you see: https://www.youtube.com/features > Monetization. This would help us look into the issue better.
Thanks for the screenshot. It can take up to 1 week to see the Community tab after passing 1k subs. Otherwise, if you have more than one Community Guideline Strike on your channel then you won’t be able to use the feature. Let us know if this helps!