In the settings, it is possible to configure payments directly to a bank account. Before you do that, you’d need to familiarise yourself with the payout modes guide. Accepting payments directly means you will be responsible for paying taxes for saled, instead of Itch, which is more complex, and you would be responsible for paying taxes only on income.
At least that’s how it works for adults. For minors, I believe you’d need a legal guardian to accept the money for you. But I’m not a lawyer, make sure to ask a legal guardian for advice.