(For some, but not all, Zoom updates, the zoom app will show a banner that A new version is available! Update at the top. Find in your apps list and double click the icon to start the app.
Double click on Start Zoom, to launch the application.
However, the Zoom app on your computer doesn't update itself automatically, so manually check for and apply updates regularly (do the update in the app not at ). If you have issues updating Zoom, create a ticket.