I Just installed Fdroid, and have it updating its repositories. I know that it shows the progress of that in a notification, but I can’t find where that notification is. If it helps, I am on Ubuntu 16.04 with GNOME 3, and I just installed the anbox snap a few minutes ago. Any help is appreciated!
AFAIK Fdroid updates without you having to interact with notifications, but still, for the sake of anyone else finding this:
You can get (kind of) notification support by using KDE-connect. It has the ability to mirror notifications. If using Gnome, there is an extension called GSConnect that implements kdeconnect for gnome.