Thank you for posting here in the Community, @Ancient_Epics.
Both QuickBooks and Turbotax are Intuit products. You don't need to create a new account each time you sign up for Intuit products.
This means you can use your existing Intuit account in Turbotax in opening up a QuickBooks Online account.
You can read through this link if you want to learn how to import QuickBooks data into TurboTax business.
Get back to me if you have additional questions about opening a QuickBooks Online account. Click the Reply button below.