If your employer uses ADP for their payroll processing you will just have to wait for them to make the W-2 information on their website. Employers have until 02/01/2021 to provide a 2020 W-2.
See this TurboTax support FAQ for importing a W-2 - https://ttlc.intuit.com/community/entering-importing/help/how-do-i-import-or-enter-my-w-2/01/26253
