If you filed your federal with TurboTax then please see this FAQ on how to file your State return:
https://ttlc.intuit.com/replies/5269973
If you did not file your federal with TurboTax then you will need to re-create your federal return in the TurboTax software or TurboTax Online but don't file it. Then prepare and file your state return using TurboTax. You'll need to paper-file your state return, as state returns cannot be e-filed separately. Please be aware that unless you qualify for the TurboTax Free Edition you will have to pay for both the federal and state return, even though you won't be filing your federal. Please see this FAQ for additional information:
https://ttlc.intuit.com/replies/4232481