Yeah, I know, I'm here since 2013. Anyway this is the first time I receive a Discord message.
There is a first time for everything, and all who use modern ways of communication sooner or later get a message like this. It is important to explore what this is really about, but when someone is asking you to pay first in order to get your alleged prize, there is no doubt that it is a fraud.
The best thing to do when something like this happens is to report it to abuse service, in this case of Discord. That way, you can help keep the whole thing from spreading further, in other words, you can save others from falling into the trap.