The easiest way to get Disney+ on a Vizio TV is to download the Disney+ app via the SmartCast TV platform. All Vizio SmartCast TVs from 2016 and later will support the app, so if you have a recently-purchased TV, simply head to the SmartCast platform, download the app, sign in, and get to streaming!
In this way, how do I add apps to my Vizio Smart TV that are not listed?
Click the V button your Vizio TV remote control to get to the apps home menu. Click on one of the options on the top the screen that takes you to the App Store options (Featured, Latest, All Apps, or Categories). Next, highlight the app(s) you want to add that is not already on your list.