Good question.
It's not only about how many users you have, it also (and sometimes even more importantly) about:
1. What the conversion rate is (visitor to user or click to paying customer, etc...).
2. What your user life cycle is.
3. How engaged the users are.
4. What your profit % is from each user.
5. What industry you're in.
and a few other metrics. Sometimes, if these metrics are good, it less matters that you "only" have X users.
Good luck

I've successfully helped over 350 entrepreneurs, startups and businesses, and I would be happy to help you. After scheduling a call, please send me some background information so that I can prepare in advance - thus giving you maximum value for your money. Take a look at the great reviews I’ve received: https://clarity.fm/assafben-david