Year of the Scourge was a community-hosted event several years ago.
The best way to find RP nowadays tends to be searching the forums and associated Discords/in-game communities (those are not quite guilds) for events to meet up with people and make contacts.
One such community would probably be the Wyrmrest Community Project although I know there are others, some cross-realm with MG as well, but I can’t find a forum post for those unfortunately.
A lot of RP nowadays is faction neutral, especially hangout style events, so this is just a reminder that you’ll probably want to invest in some Elixir of Tongues beforehand.
For some events I can think of off the top of my head that are potentially easier to get involved in:
But your best bet to finding events of interest would be the Discords and associated communities, since not everyone advertises on the forums these days.