Did you e-file your 2018 federal tax return and was it accepted?

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.

Use this TurboTax website to check the status of an e-filed return and if it was either accepted or rejected - https://turbotax.intuit.com/tax-tools/efile-status-lookup/
If accepted by the IRS use the federal tax refund website to check the refund status - https://www.irs.gov/refunds

What is the status of the e-filed 2018 tax return?

The 2017 tax return had to be printed and mailed to the IRS, it could not have been e-filed.

If you used TurboTax for the 2017 tax return then you had to purchase, download and install on a personal computer one of the 2017 desktop editions from the following website.  The TurboTax online editions are only for tax year 2018 - https://turbotax.intuit.com/personal-taxes/past-years-products/