Your question is posting from online TurboTax. Forms mode is not available for online; forms mode is a feature of the desktop download software only. With online, you can just see a preview of your Form 1040 and Schedules 1, 2, or 3 -- you cannot see any other forms until you pay your fees.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/preview-turbotax-online-retur...
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