You will continue to have access to your account until the end of your current billing period, Jennifer.
Once you cancel your QuickBooks Self-Employed (QBSE) account, your data will remain securely stored for up to one year. During this period, you will have the option to resubscribe to regain access to your information, then reach out to support for assistance if needed.
After one year, you will still be able to sign in using your existing credentials and resubscribe; however, your accounting data will no longer be available.
Let us know in the comments below if you have follow-up questions.