Here's a video titled "$1 vs $10,000,000 Job!" (https://www.youtube.com/watch?v=Wdjh81uH6FU). He then proceeds to look at a number of jobs, with a job that make basically no money ranging to an NFL player. It's clickbaity, there are a lot of easy jokes in the episode, but there's nothing fraudulent. He's not lying about anyone's salary, he pays people out in shows where they make money, and nobody is being scammed. All of his videos are like this. I'm not saying you have to like him, but fraud describes something very specific which he is not doing.

I'm sure there's some disgruntled employee complaining somewhere, but I have not seen any legitimate complaints about him. All those "Mr Beast is a fraud!?!" videos have no substance, and are just people using his name for views.