It's Infernal. The language is detailed in the adventure module Descent Into Avernus. You can also just find the infernal alphabet on the forgotten realms wiki.
That is to say that it's very possible to translate it. Now as to whether OP's translation is accurate or not, i have no idea, cause i have better things to do than read fake text out of an NPCs horn.
A lot of people have been hyper critical about the content people have been posting, and even more upset when it's one person posting a lot. I don't know where they expect to get content from.
You can waste my time by posting here, I've seen many of your contributions and I greatly appreciate your efforts. I don't usually say anything though. That other guy can fuck off.