depends on who you beat up lah
1) rich and well connected - be prepared to pay lots of compensation $, he will sue your pants off
2) ah beng ginna kia - be prepared to be hunted down by his ji tau hiar tees, you might get chopped and lose an arm or leg
3) an ordinary fucker - call police file magistrate complain, wait afew months and see how
4) a trained martial arts guy worth his salt - just when you think you have won the fight with your sucker punch, be prepared to taste real pain
5) if you are really the can type, and caused some serious damage, you will end up in jail for assault under section bla bla bla