The "Pay with my Refund" option is available only if the taxpayer e-files the tax return. Additionally, please note that there is a fee for using the Pay With My Refund option. See more info in the TurboTax FAQ below.
https://ttlc.intuit.com/replies/3300262
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***