You must be an Admin in an Enterprise Workspace in order to view Enterprise Insights.
Admins can view Enterprise Insights by going to Settings > Insights.
From there, you can view:
Tangos published
Guide Me uses
Most popular Tangos
New Tangos published
And even filter by:
Time Period: All Time*, Last 90 days, 30 days, 14 days, 7 days
App, Folders, Tangos, Viewed by
*All time is the default setting