You can import a W-2 using TurboTax when the import partners have the W-2 available for import, usually in late January.
See this TurboTax support FAQ for importing or entering a W-2 - https://ttlc.intuit.com/community/entering-importing/help/how-do-i-import-or-enter-my-w-2/01/26253
Employers have until January 31, 2020 to provide a 2019 W-2
