Unless you're referring to a private server (in which case, you can ask in the appropriate section), RS Classic was shut down permanently on August 6, 2018 by Jagex. No accounts exist which are able to play it, because the game is no longer online.
Please read How To Tell if your Name is Rare or Not + Name Market Tips/FAQ before posting in here because none of these are in any way rare or desirable. Also people can't add your discord just from a name, discord user identifiers include the 4-digit discriminator appended to your name (i.e...