think that if you have the personality for it and something unique to talk about, i dont think that its that unlikelly. Especially if the target is $20 a day.
It is possible, but not likely. And even if you can succeed, it usually takes months or often years to build up to $20/day.
Until you build a youtube channel up to 1000 subscribers and 4000 hours of watch time, you are not even eligible to apply to be in the youtube payment program.