I'm here to help get the Tax checklist option in QuickBooks Self-Employed (QBSE).
The normal quarterly estimated tax deadline has been extended in QBSE. The Treasury recently announced tax changes and updates in response to COVID-19. This includes extending the Quarter 1 deadline for Tax Year 2020. Quarterly estimated taxes are now due on July 15, 2020. Check out the latest information on tax deadlines and updates related to COVID-19.
That being said, you should see the Tax checklist button beside your name. See the attached screenshot below for your visual reference.
If not, it could be a browser-related issue. Clearing the browser's cache helps delete the most recent accessed data stored in this window. Thus, causing the Tax checklist option to disappear.