I can share some information about adding your data to your new QuickBooks account, @luisiana_two-yah.
The feature to restore or migrate your data from QuickBooks Desktop to QuickBooks Self-Employed (QBSE) is still unavailable. That would be a great addition to the current features that we have, so I'll take note of it. In the meantime, I suggest entering all your information in QBSE manually.
Check this article on how to get started with your QBSE account: QuickBooks Self Employed - Getting started tutorials.
From here, you can refer to the following article on how federal self-employment taxes are and how QBSE estimates your federal quarterly tax payments: How QuickBooks Self-Employed tracks self-employment taxes.
Let me know if you need further help with adding your data to QBSE account. I'm always here to assist. Have a great rest of the day!
