If you are talking about the History section under Navigate in the app, this History only stores results from navigation searches, and not navigation to Favorites. Waze doesn't store history of routing to favorites because they are already in your favorites and are easy to retrieve, but a history of your searches needed to be saved.
If you ware talking about seeing where you've driven and the route you took, those are only available on the website in the map editor. The links Andy provided above, especially the first one, will get you to the correct server for your country. Once logged in, go to My Places, then Drives. See the
editor interface documentation for more information.