Hi, is there an estimation anywhere about how many real users bitcoin has?
Not sure but I guess I saw on some interview with an old man that they are estimated of 250k users , not that much right

It's very hard to say, but I think probably 2 to max 3 million users.
Wallets don't say anything as there are services and companies who have hundreds of wallets with a balance.
just wallets but not users.
i would estimate 2-5 mio users worldwide?
It seems we are no very good estimating

Anyway, we could say there are in the range [0.25; 5.00] million people. Very few people.