I don't think that is there yet but you could do it with some powershell if I am not mistaken.
you would write a script that connects to Azure ad and returns your users etc. then one that returns the office licenses, (SKUs) and somehow matches them up to your subscriptions.
It would take a lot, but much of it can probably be found already coded up with some bing searches.
perhaps this can get you started?
get user licenses
