Medal of Honor Multi Player

I usually spend ONE to TWO hours in multiplayer and score pretty well (middle and top scores on the team). However, I have not earned anything from the sections that I played (hours to play, killed, Skill, etc).

Is it true that I have to finish the whole section in order to have my scores recorded? If yes, how long does each section (Team Assault, Combat Mission, etc) last? Like many hours????

I'm not even sure I understand the question, but your score you should be recorded at the end of each round. Look under career.