In Rock of Ages 2 I have had a run pending for 2 months. I tried contacting both mods, but neither has responded lol. is there anything I can do to get my run approved?

Yes, use this thread (read the rules in the first post): 
https://www.speedrun.com/the_site/thread/dueac

I saw an inactive mod, I found his yt channel and literally asked him in his comments if I could be mod, he said yes, added me, and removed himself, try that if you get ignored on that thread, lol

They won't ignore you on that thread. It'll just take some time for them to get to you. Managing this site is not easy. If anything, you should try contacting the mods before you post there, even through youtube.