I recently created an account on the Binance exchange, I have the PRO version with the futures trading module, but I can’t set the leverage in the MoonBot terminal on coins bigger than x20, what’s the reason?

Binance does not allow users to trade on leverage greater than x20 for 60 days after activation of a futures account. You will have to wait for this restriction to expire and then you can change leverage higher than x20, both on the exchange itself and accordingly in the MoonBot terminal.