Only you can initiate the transmission of your tax return.
Did you do this? -
You complete your tax return by finishing all 3 Steps in the File section. In Step 3, to e-file your tax return, you must click on the large Orange button labeled "Transmit my returns now".
After completing the File section and e-filing your tax return you will receive two emails from TurboTax. The first email when your tax return was transmitted and the second email when the tax return has either been accepted or rejected.
If the 2020 tax return was e-filed then you have to wait for the IRS to pull the federal tax return from the servers. TurboTax does not transmit the return to the IRS, the IRS pulls the tax return.