TurboTax does not support tax year 2019
If filing the 2019 tax return with a tax refund, the refund will not be paid since it is beyond the 3 year limit from the due date of the 2019 tax return.
No, you cannot use TurboTax for a 2019 return. The 2019 software is no longer available; even if you could find it on eBay etc. you cannot update it or download state programs. It is also too late to get a refund for a 2019 return. Even if the tax form shows a refund, the refund has been forfeited and the IRS would not pay it. If you owe tax due, it is owed with late penalties and interest.
You can get the paper forms to prepare by hand, seek other software, or seek local paid tax help if you need to file a 2019 return.
2019
2019 Instructions
https://www.irs.gov/pub/irs-prior/i1040gi--2019.pdf
1040 https://www.irs.gov/pub/irs-prior/f1040--2019.pdf
1040SR https://www.irs.gov/pub/irs-prior/f1040s--2019.pdf
2019 Schedules 1-3
https://www.irs.gov/pub/irs-prior/f1040s1--2019.pdf
https://www.irs.gov/pub/irs-prior/f1040s2--2019.pdf
https://www.irs.gov/pub/irs-prior/f1040s3--2019.pdf