What girls like isn't standard; it all depends on the person. Some girls like the bad boys who curse all the time, while others like the well behaved fellows who have the right qualities, like kindness. On the whole, most girls who know what they are doing prefer the latter.
Some girls like bad boys but most of the time they end up being heart breakers. But then sometimes most of the good guys get friend zoned and are there for the girl she needs someone to cheer her up. A bad boy will get a girlfriend quicker while it will take longer for a good guy to find the right girl when you do start a relationship with her she'll love it.