How many Twitch followers to get paid?
In order to make money on Twitch, you have to be a Twitch affiliate or partner. And, in order to accomplish that you need at least 50 followers.
There are additional ways you can make an income on Twitch without being a partner that include paid sponsorships, requesting donations, creating merchandise, and affiliate partnerships.
It is very important to note though that it is highly unlikely to make money at all if you are not at least a Twitch partner.