Duck and Cover

i asked guard guy at the entrance about the skullz and got the mission to beat em up i killed them and the town is after me wtf did i do wrong?

Killed or shot a guard at the bar fight did you? In this mission, in my experience, the town & guards get very hostile if you do.

Reload & try again.

and you can't just barge right in to the skulz and kill them, it has to be done proper, by the book....
do the easy thing, waste all junktown