Yes, you may file Form 4868 with no ITIN.
According to the IRS:
“If you don’t have an ITIN, enter “ITIN TO BE REQUESTED” wherever an SSN is requested.”
If you are not able to print Form 4868 within the TurboTax program,
HERE is a link to that form.
Print, fill out, and mail Form 4868.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"