If you used the ONLINE program to file the extension then log in and use the print center to save the PFD with the worksheets to see the extension form ... you may need to pay for the 2019 program and/or register it before accessing the PDF.
Click on Tax Tools on the left side of the online program screen. Then click on Print Center. Then click on Print, save or preview this year's return. Choose the option Include government and TurboTax worksheets
