What is "a quote"?What is it?

It means words that have come from someone that has witnessed an event.
They usually come in "quotation marks". Like this ". This is a quotation mark ".

A quote is repeated words from anything like a movie, a book, or an event.

Here are some example of quotes:
"Houston, We have a problem!" -James A. Lovell
"You can do anything, but not everything." -David Allen
"You miss 100 percent of the shots you never take." -Wayne Gretzky

A quote is someone else's exact words.