It only maxes to you character level, once you hit 50, it can max to 100.
In short, if you're level 35, the max valor you can have is 35, until you hit 36...and so on, and so on.
Ok, i see. Any idea how long it would take for me to get from 50 valour to 60, so i can get battlemaster gear? I assume it doesn't increase at quickly as before.