If you are after battle against Scar then you should go back to your home where you gonna have a talk with Jester. It unlocks new locations and the situation will change in the camp, track and town.
You have to visit the bandit camp at night and try to sneak in until you've spoken with Jester a few times. You also need to run into the caravan on the Track, talk to the Bartender about the guard, and visit the Track at night after.
