Hi @jronchetti
Firstly, you need to enable multi-currency in your account settings:
You can find US Dollar in the list of common currencies.
Then, once you’ve enabled this, you can choose the currency you need when setting up a new bank account:
For more information about using QuickFile in other currencies, including how to set up a bank account, please check out the following: Invoicing in foreign currencies
I hope this helps, but if you have any further questions, please don’t hesitate to ask.