The stories on Duolingo can often be accessed through the main interface of the app. Just navigate through the menus and features, and you should come across the story section. It might be labeled clearly or hidden within a subcategory, but keep looking and you'll find it.
You can check the Duolingo app itself. Sometimes, they have sections dedicated to stories for you to read.
Well, usually within the Duolingo platform, there are specific areas or menus where you'll find the story reading options. Look around for tabs like 'Stories' or something similar.