3 ways of scoring:
Advancement
1 for winning in the champions bracket (unless it's the final match AKA the championship)
0.5 for winning in the consolations bracket (unless it's the final match, example the 3rd/4th, 5th/6th, 7th/8th)
Placement
1st - 16
2nd - 12
3rd - 10
4th - 9
5th - 7
6th - 6
7th - 4
8th - 3
NOTE: You get Placement Points as they're guaranteed. For example, winning in the Championship Bracket Quarterfinals guarantees you no worse than 6, so you get 6 immediately for placement and 1 for advancement (plus applicable bonus)
Bonus
2 for a Pin
1.5 for a TF
1 for a MD
EDIT: If you win by injury default, medical forfeit or DQ of opponent, that's 2 also.
I'll use Zain last year as an example.
He placed 1st (got 16)
Advanced 4 times (Winning Round 1, 2, QF, SF) so he got 4 for that
He teched his first opponent, pinned his second, teched his 3rd and regular decisioned his last 2. That's 5 bonus (1.5 for each Tech, 2 for the pin)
He scored 25