Where are you stuck?
ALL of your W-2’s must be entered on the SAME tax return.
Go to Federal>Wages & Income to enter a W-2.
After you enter the first one, you click Add Another W-2.
W-2's come from your employer, and they have until January 31 to issue it. Some employers allow you to import the W-2 through the software, but for security reasons you still need information from the actual W-2 to import it. Some employers have payroll sites that will have your W-2. You might need to phone, drop in, email and/or snail mail an old employer to make sure they know where to send your W-2.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-forms/get-copy-w-2/L8FTim9MO_US_en_U...
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/import-enter-w-...
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