Guild Wars 2

I’ve tried googling this and looking around for the answer but no such luck so far. My question is, when you hit B and look at the score of the 3 servers there are what I’ve seen so far 1-2 star/moon icons, so my question is what do those represent?

It’s borderland bloodlust

https://wiki.guildwars2.com/wiki/Borderlands_Bloodlust

if there is 1 star. That server has got the ruins on 1 borderland.