With online TurboTax you do not have direct access to forms. Forms mode is a feature of desktop download software. With online, you can just preview Form 1040 or Schedules 1, 2 or 3 -----AFTER you pay your fees you can print and see the other forms and schedules.
PREVIEW 1040
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/preview-turbotax-online-return-filing/L77WCkvnu_US_en_US?uid=m681fkhr