There are few people who live to be 100 years old.
I don't know how to cook many things.
I’m often told by hairdressers that I don’t have much hair.
This word has a single kanji with hiragana attached, ending in a い. This means you know it's an adjective. What is the adjective form of few? It's also few.
The reading for this one is fairly difficult, as it's the kun'yomi reading (you can tell it's kun'yomi because of all the hiragana attached). You have to remember the すく part to remember the reading of this word. Think of it this way:
You have a few of something. This something is suckers (すく). Imagine putting all (three-ish) of them in your mouth at once. How does it taste? Can you taste the flavors from each of the few?