Head to the Job Board in the Barracks. Select the highest paying Bounty (the smaller ones are just for cash).
Apparently a man is terrorizing Rob’s Bar. First off before going any further with this one, make sure to head into your Hideout and change the day so that it is ‘Night’, as the Bar is closed during the day. Now head to the Bar which is located near the Casino.
Inside the Bar speak to the Bartender (fighting off a potential thug before hand, who may or may not be there).
After speaking to the Bartender low and behold the Bounty appears, take care of them!
Related Guides / Links: