Help needed. What are APUSH topics? Important ones!!!!!

Hi, I just took US hist regents in January, I got an 89 and decided to take APUSH in May. Though, I registered very late for the exam on 28 February.

“I want to ask one thing what is main difference in topics between USH and APUSH? and what are some very important things that are only covered in APUSH? So i will focus on those areas.”

background: I have come from Pakistan, had no knowledge about US history, never done that. But I’m taking normal US history class at my HS, and with 4 months of self study i got a good score thats why i decided to take APUSH(i love history). Im a senior.