You can autofill 2FA tokens for specific logins with the Dashlane mobile app. When you log in to a site or app with 2FA set up, a pop-up appears saying your code is ready to paste. Select paste in the space for the code. Dashlane autofills your token.
Autofill is turned on automatically for the Android app. To turn on autofill on an iOS (Apple) device, go to Settings, select General, and turn on Copy 2FA token automatically.