Not sure what your question is. Did you file 2018? You need the Desktop program installed for the same year to open a .tax file, like .tax2018, .tax2017, etc.
Are you trying to import a W2? How to import or enter your W2,
https://ttlc.intuit.com/community/entering-importing/help/how-do-i-import-or-enter-my-w-2/00/26253
