You can preview Form 1040 and Schedules 1, 2 or 3, but you do not have direct access to any other forms or schedules with online. Forms mode is a feature of desktop download, not online.
PREVIEW 1040
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/preview-turbotax-online-retur...
After you pay your fees you can preview or print and review before filing
https://ttlc.intuit.com/community/printing/help/can-i-print-a-copy-of-my-turbotax-online-return-befo...
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**