No worries, not a dumb question. Zwift is maybe not always sometimes the most immediately user-friendly to navigate around in 
From your home screen (where you can see the logout and profile links in the top right, and there’s a globe and a calendar icon and such on the top left), you can hit the Globe icon to get to the Routes list, or you can scroll down the page until you get to the Just Ride heading. From there, the route might actually be shown (they show a few routes right there), or scroll to the right now and you’ll find a link to Routes.
From the Routes list, you can choose the world at the top (it’ll always be Watopia, plus two other worlds), and then scroll down until you find the route you want. That list will show total elevation and distance in the route, so you can gauge how much climbing there is. Clicking on the route will show you the map before you commit to riding it.
When you choose a route and start riding, the game will guide you through the route, auto-turning to keep you on the course. So if you choose one of those routes above, they will take you up the climbs, you just have to let the game navigate.