Would fillers improve my chicken pox scar? What other treatments would work, maybe a more permanent option? (Photo)

So I had lovely clear skin right up until I was 16, then I caught chicken pox and got, what I see as a huge scar, right in the middle of my forehead. Now I’m 23 I want to know what my options are in relation to removing this scar from my face as I really hate it and feel really ugly because of it. I have a couple of smaller scars near it which you can see in the photo but I really just want the big one to be improved more than anything I can live with the smaller ones.