you can't. Turbotax does not support returns from 5 years ago. Turbotax supports 2018-2021
https://turbotax.intuit.com/personal-taxes/past-years-products
but 2018-2020 must be filed by mail
forget about any refunds due to you for 2014,2015,2016, and 2017. they are forfeit because you didn't file within 3 years of the due date. 2018 must be filed by 4/15/2022
if you owe, there is no time limit for the IRS to assess the taxes penalties and interest.
