I think the usual is that someone,
when he appreciates you work, after listening some of your tracks,
they decide to follow you. And you get +1 followers.
If you notice, you can follow the person back.
It’s not “you follow me, I follow you game”. 
You followers should be those ones that want to see
updates in the future when you release something now.
Be it authors on AudioJungle that like your stuff,
or better, clients buying your music.
It’s not a “follow me, I’ll follow back” game : )
cheers