Based on available records, this is in mainstream psychology, military doctrine, business theory, or pop culture (such as movies or comics). It does not appear as an official model like "The Big Five" personality traits or "The Five Forces" by Michael Porter.
To get a definitive answer, please provide the source where you saw the term (e.g., a book title, a podcast episode, a game, or a corporate training slide). With that context, a precise explanation can be given. fear force five