Hey there! Have you ever heard or are you fimiliar with the punk band The Story So Far?
No I have never heard of them.  Have they made a lot of songs
Thy have released 3 studio albums so far, and they are still signed with a record company, so not too many
Have they had any hit songs?
One song "while you were sleeping" that was released in 2010 got mainstream but I wouldn't say a hit song. 
Are they similar to any other bands?
I would say they have a close proximity with other Punk Rock bands but there's none specifically that are quite like them.
I do not know any other punk rock bands - are there any famous oneS?