Hello @rwdavis1969!
It sounds like you are looking for a copy of your 2018 tax return.
If you filed your 2018 taxes with TurboTax, sign in and go down to Your tax returns & documents
If you are not sure which User ID you used to file go to the TurboTax login page and select
I forgot my user ID or password
You can also try viewing or downloading a transcript of your 2018 return online at Irs.gov
Keep in mind at this time tax transcripts are only available online as the IRS has stopped processing transcript requests by mail until further notice.
Hope that helps!
Adrian E