It is too late to use TurboTax for a 2019 tax return; the software for 2019 is no longer available, nor would it be supported even if you can find it on eBay, etc. And it is too late to receive a refund for tax year 2019--any refund has already been forfeited. However, if you owe tax due, you will owe with penalties and interest.
You can seek local paid tax help or use the forms to prepare the return on paper and mail it in.
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
Remember to prepare your state return as well—if you live in a state that has a state income tax.
https://ttlc.intuit.com/community/state-taxes/help/how-do-i-contact-my-state-department-of-revenue/00/25573