This is a Discover mockup, i tried to makes it similar to the real Store, like AppStore or Google Play i get some ideas from M127 and M111 mockups.
Home page:
Here is a big category bar and apps cards has a screenshots, also in top you can put apps with a big nice image (Like in Deepin Store).
Here seen that Big Apps category has a own smaller categories, also a apps cards now more compact.
Opened App:
(second category would to hide?)
SVG: