I have W-2 from separate years which so I file first

Oldest first. Mail each i separate evelopes

https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/prepare-2020-2019-2018-tax-return/L6De9oWON_US_en_US?uid=lf66dpfn

You can file them in any order unless there are any carryovers that need to be used, then you will want to start with the oldest one first.  Also remember, generally, you must file a claim for a credit or refund within three years from the date the original tax return was due so you do not want to wait too long.

Each W-2 has to be included in a tax return for the appropriate year. You can't put your W-2s from earlier years on your 2022 tax return. And you cannot use TurboTax Online to file for past years. TurboTax Online is only for the current tax year, which is now 2022. To file for earlier years you have to use the CD/Download TurboTax software for the years that you need. You can purchase downloads at the following link. There is no free filing for past years.

Past Years' Products

You might get a better price from a reputable online seller that still has TurboTax in stock for the years that you need.

Tax returns for past years cannot be e-filed. You will have to print your past-year tax returns, sign them, and file them by mail. As ee-ea said above, mail each year in a separate envelope.

TurboTax no longer supports years earlier than 2019. It's too late to get a refund for 2018 or earlier. You can file the tax return, but if it shows a refund you will not get the refund. If it shows a payment due, you have to pay it.