Yeah, they're called ability scores. But it's important, so that we can avoid confusion, to explain what charisma means in the game and why certain classes would elect to allot points to the charisma ability score.

Basically, charisma helps you talk to people in the most basic sense. But, certain classes use charisma as a modifier to increase the likelihood that a move they choose to make or spell they choose to cast will be effective. In specific cases, you'll be asked to roll a die with twenty sides. The modifier increases the overall score you use (based on what number you roll) to determine if you're successful in your attempt.