It seem that this will take years. I’m at lvl 303 with around 550k honorable kills.
I want the mount.
I haven’t gained any honor levels since they disabled the daily(?) “autocomplete WQ” feature of some Legion order halls.
Ah well my love rocket took 15 years lol
Honor levels go that high? 
it takes a couple years of spamming arena.
idk if this helps but i play around 500ish games a season, mostly 3s.
maybe closer to 700, and I hit 500 on 9/24/25. I am now 586 as of today.