Welcome Katie from the Lake.....Steve from the other side of Jersey (Bayonne) here welcoming you to the hobby and the BB! I'm sure you've had many answers to your question on no cash value or NCV chips as the veterans describe them !
Simply put, they have no cash REDEMPTION value at the casino cage. Their only "value" is usable as a bet at a table game, usually for the number (denomination) on the chip....5, 25, 100 etc.
Hope this helps and again......welcome!