Click on Federal Review.  The stimulus questions should be on that page.

I tried repeating the review but it just jumped over everything.

No Joy. It does not review previous inputs.

You have not already filed the 2020 tax return, have you?

On my online edition I can click on Federal Review and it gives the screen Let's make sure you got the right stimulus amount and then clicking on Continue I have the page for the stimulus questions to enter amounts.  

If you cannot access the stimulus page then contact TurboTax support for assistance.

Use this website to contact TurboTax support during business hours - https://support.turbotax.intuit.com/contact/

Or -

Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax

Or -

Use this phone number and select TurboTax - 1-800-4-INTUIT (1-800-446-8848)