Yep, it is, but only since recently.

» The first ever Fortnite Pro-Am - Esports - Esports | Savvity Network

Yes! Fortnite does have an Esport scene! However, given that the game is relatively new, the production quality and organisation of the events reflect that. 

Here I talk about the first Pro-Am tournament that was hosted earlier this year.

I must have missed that article! Thanks!