You have to go all the way through the FILE section ----enter banking information if you want direct deposit for your refund. Then go all the way to a big orange button that says "Transmit my returns now" to e-file.
You have to go to Step 2 in the FILE section.
HOW TO CHANGE OR ENTER BANKING INFORMATION FOR REFUND
You cannot change banking information while your return is in pending, nor can you change it after the return is accepted. The IRS does not allow it.
When you e-file your federal return you will receive two emails from TurboTax. The first one will say that your return was submitted. The second email will tell you if your federal return was accepted or rejected. If you e-filed a state return, there will be a third email to tell you if the state accepted or rejected your state return.
First, check your e-file status to see if your return was accepted:
https://turbotax.intuit.com/tax-tools/efile-status-lookup/
If the IRS accepted it, what does it say here?