Nice to have you in the Community space, @ibesthetics.
I'd be glad to spare some information about resubscribing your QuickBooks Self-Employed (QBSE).
When you cancel your QBSE account, we hold on to your data for one year just in case you want to subscribe back. You can simply sign in to your account, resubscribe, and pick up where you left off. The data will automatically load once you've resubscribed.
If it's been a year, you can still resubscribe with the same login credentials, but, your data won't be there anymore. To learn more about this, check out this article: Resubscribe to QuickBooks Self-Employed.
Let me also add these links that serve as your refresher. These contain details on how to import older transactions and run your QBSE account seamlessly: