During the app assignment process, Intune for Education recommends popular educational apps from the Microsoft Store for Education. If any of the apps becomes one you decide to use in a school, you can acquire the app for immediate assignment to groups from this screen.
When you acquire an app from the Microsoft Store for Education, a lot of information is being communicated between Intune for Education and the Store.
This includes secure information such as your account information with both services and transactional data.
This can take a few minutes, and sometimes, may require you to refresh the page if you aren't seeing any recently acquired popular apps.