Guild Wars 2

is there any leveling builds for elementalist , say.. around lvl30+ , which can solo cap supply camps in wvw ?

I imagine that any build with the Elemental can cap supply camps. Not sure how tanky the Earth Elemental will be at such a low level, though.

I’d grab 10 Arcana / 10 Air / whatever as a 30+

There’s a video on my channel if you need good spots.