it's hard to explain but there's a powerpoint that explains when i get hired

If they can’t give you a job description until after you’re hired, how do you know if you’re qualified? If they hire just anyone, then it’s a low skill job and might be too boring for you

there’s a fee to join

Another red flag. My guess is some kind of MLM or crypto.

$10 an hour

Is that acceptable where you are? Minimum wage is $20 here. Does the wage depend on how much you sell or how many people you bring in? How much does the wage vary each week? At $10 an hour, how long will it take to recover the entry fee?

Not enough information on what the job is, evasive about what the job is, and the entry fee, all combine to sound dodgy to me; even if he says it’s legal, is it fair and moral?

Personally I’d give it a miss. Only you can decide how urgently you need the money and how far you are willing to go to earn it.

Good luck, and please come back and let us know how it goes!