Isn’t it funny when someone complains about one grammatical error while committing others?
Use amount for things that cannot be counted (a pile of mashed potatoes, for example) and number for things that can be counted.
Use who, not that, when referring to people.
Use italics, not quotation marks, to indicate that you’re referring to a word as a word. (You may have noticed that I do this all the time in these posts.)
The number of people who confuse to and too is too damn high.
(The original meme said, The amount of people that confuse “to” and “too” is two damn high.)
If you’re really stuck on using a word other than number, try percentage.