How much money can you make from Testerup?

So, I'm curious, just how much money can one realistically expect to make from Testerup? Is it a viable side hustle or is it more of a small supplement to one's income? I'm looking for a way to earn some extra cash, and I've heard of people making money through testing websites and apps. But I want to know, are the earnings from Testerup substantial enough to make it worth my time and effort?