Greco-roman wrestling is a style of wrestling that is practiced worldwide and used in the olympic games.
This style of wrestling does not allow holds below the waist, so you cannot attack or hook the legs
the main way to take someone down in greco is by throws. The you can score by exposing the opponents back to the mat.

There are multiple ways in which you can win,
win by pin. this is scored when both of the opponents shoulders touch the mat at teh same time. this ends the match.
win by points. if you have more points at the end of the match, you win. and if you get an 8 point lead then you win