You could probably get "up to $499" if you put it in the Buyer Requests forum.
Atlernatively, if this is legitimately your domain and for sale (it looks like an operational business), you should get 7+ figures.
Worldwide Exchange is great name for crypto marketplace, and crypto literally just prints money.
Whatever an exchange would offer you, even 7 or 8 figures, costs them almost nothing because just they created their own token out of thin air.
It's regged till 2030, so you could just slap a landing page with a $10m asking price or put an email address on a blank page and consider offers above 7 figures.
Although there are 17,576 3-letter combos, there are only 26 double letter + X names.
So while it's not objectively the greatest 3 letters, X seems to be gaining popularity recently, perhaps due to Musk and/or the explosion of exchanges/DEX, and it's 3 letters with huge potential in a massive sector rolling in dough.