Currently, we're unable to change the region once created. However, we can cancel your existing account and then subscribe to a new one.
Here's how:
Go to the Gear icon.
Under Your Company, select Account and settings.
Click the Billing & subscription tab.
On the QuickBooks Plan section, select Cancel.
Hit ConfirmCancel.
Once done, you will receive an email confirmation for the cancellation of your online subscription.
Then, you can now start creating your new account with the United States subscription. Check this link so you can select the right region: Choose your country.
Once everything is in place, you can review the topics from this article for more tips and resources while working with QuickBooks in the future: Help articles, video tutorials, and more.
Let me know if you have any other questions about changing the country of your subscription. I'm more than happy to help. Keep safe!