I think I got 20, I'm irritated I didn't know them all. I like to think words are my "thing."

1 26 L of the A 26 Letters of the Alphabet
2 7 D of the W 7 Days of the Week
3 7 W of the W 7 Wonders of the World
4 12 S of the Z 12 Signs of the Zodiac
5 66 B of the B
6 52 C in a P (WJs) 52 Cards in a Pack (with Jokers), though I would have said Deck
7 13 S in the USF 13 Stripes in the US Flag
8 18 H on a G C 18 Holes on a Golf Course
9 39 B of the O T
10 5 T on a F 5 Toes on a Foot
11 90 D in a R A
12 3 B M (S H T R) 3 Blind Mice (See How They Run)
13 32 is the T in D F at which W F 32 is the Temperature in Degrees at Which Water Freezes
14 15 P in a R T
15 3 W on a T 3 Wheels on a Tricycle
16 100 C in a R
17 11 P in a F (S) T
18 12 M in a Y 12 Months in a Year
19 13=UFS
20 8 T on a O 8 Tentacles on a(n) Octopus
21 29 D in F in a L Y 29 Days in February in a Leap Year
22 27 B in the N T
23 365 D in a Y 365 Days in a Year
24 13 L in a B D
25 52 W in a Y 52 Weeks in a Year
26 9 L of a C 9 Lives of a Cat
27 60 M in a H 60 Minutes in a(n) Hour
28 23 P of C in the H B
29 64 S on a C B
30 9 P in S A
31 6 B to an O in C
32 1000 Y in a M 1000 Years in a Millenium
33 15 M on a D M C 15 Men on a Dead Man's Chest