When working with WebEx, we don't always have it pulled up in front of us. In these cases, the only way to see your notification count is to open up the app and see the Messaging, Teams, Meetings, etc. individual "badge counts".
It would be nice to see how many notifications I've got to review before even switching back to the app.
For example, Microsoft Outlook has an unread email count on the icon. Even if it was like Slack, where any notifications pending review shows up as a red dot, would be an improvement over the currently nothing that is shown.