See this TurboTax support FAQ for completing a 2019 tax return originally started with the online editions - https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-finish-a-prior-year-return-that-i-...
If you paid for one of the 2019 online editions contact TurboTax support and they can push a 2019 desktop installation file to your download account at no charge - https://support.turbotax.intuit.com/contact/
A 2019 tax return can only be printed and mailed, it cannot be e-filed. Print, sign, date and mail the tax return to your state. Include with the mailed return any forms W-2 and 1099 which have taxes withheld.
There are no penalties for filing a tax return after the due date if filing for a tax refund or there are no taxes owed.
