ability score; attribute value
Used in role-playing games and similar contexts to refer to a numerical value representing a character's innate capabilities, such as strength or intelligence.
In this game, the higher your ability scores, the more your attack power increases.
You allocate ability scores when creating a character.
Compound of 能力 (nouryoku, 'ability') and 値 (chi, 'value'). A straightforward modern term from gaming contexts.