Galaxy Apps is where you can find Samsung apps and services and install them. But to disable and turn off Galaxy Apps notifications on Galaxy S7 (Edge) which are like push notifications (called Galaxy Apps Spotlight) and advertise new apps to install, you need to do as follows:
1. On the App Drawer, tap to open the Galaxy Apps application
2. Tap the More button on the top right of the screen, and head to the app's Settings.
3. Find the Push Notifications option and toggle it OFF
** Note that, you can also turn off the apps updates notification from this settings menu
** If you totally dislike the Galaxy App services, simply Disable it. But we don't recommend it.