To check your e-file status, sign in to TurboTax, and go to Tax Home (if you're not already there). If you've submitted your return, you'll see pending, rejected, or accepted status. If you haven't submitted your return yet, you'll see a let's keep working on your taxes! message and sections like Personal Info and Income & Expenses.
Your e-file status is different from your refund status. If you want to track your refund, go to Where's My Refund.
If you've got an Alexa device, you can enable it to check your e-file status for you.