Quote is one of those English words with multiple meanings depending on context.
As a verb, quote means:
1. To repeat someone's exact words ("He quoted Shakespeare")
2. To give an estimated price ("Can you quote me for this job?")
As a noun, quote can mean:
1. A passage quoted from a book or speech ("That's a famous quote from Mao")
2. A price estimate ("I need a quote for car insurance")
3. In finance, the current market price of a security ("stock quotes")