I'm assuming you mean your rating (BKR). Very generally: If you win a game, your rating will go up. If you lose a game, your rating will go down.
No, you do not have to win a tournament, although winning the games in the tournament (which is required to win the tournament) will almost for sure increase your rating. However, you do not get points simply for winning the tournament.
(hide) Use the Notepad to see what your Profile will look with html tags before submiting your new profile. (Paying members only) (rednaz23) (show all tips)