I'm not sure about a specific one, but you can start by looking on fanfiction.net. Just search for 'Stiles is secretly famous' in the search bar. There are likely many different takes on this concept there. Some might focus more on his friendships, while others could be more about a romantic aspect of his secret famous life.
There's a fanfiction that I read a while ago where Stiles is secretly a famous singer. In this story, he has to hide his identity from his friends because he's afraid of how it will change their relationship. It's really interesting how the author explores his internal struggle between his love for music and his love for his friends. It shows his character growth as he tries to find a balance.
Chapter 489, "Has She Been Morally Kidnapped?", is the clearest early answer because it turns Nina's situation into a concrete plot event. The chapter turns that into something concrete by moving from Yeah," Nina nodded, "I thought you looked pretty imposing, must be...
Chapter 334, "Do you not want to because you look down on me?", is the clearest early answer because it turns Do's situation into a concrete plot event. The chapter gives readers a real answer by opening on When their family business started to improve, their income became...
Chapter 215, "Overthinking is a Disease, It Needs Treatment!", is the clearest early answer because it turns Shu Yan's situation into a concrete plot event. The chapter gives readers a real answer by opening on Jiang Li let out a light sigh and tried to adjust her posture.
Chapter 505, ""Postpartum Care for Sows", is the clearest early answer because it turns Gu Yu's situation into a concrete plot event. The chapter turns that into something concrete by moving from Zhao Lang laughed, but his eyes became considerably clearer, "Is...
Chapter 164, "Congratulations to Jiang Yan for scoring one point!", is the clearest early answer because it turns Congratulations's situation into a concrete plot event. The chapter gives readers a real answer by opening on Damn, the production team is so shady, they're still doing a live...
Chapter 83, "Can Actually Carve Flowers?!", is the clearest early answer because it turns Director Sun's situation into a concrete plot event. The chapter gives readers a real answer by opening on When they received the task, the three of them were already...
Chapter 306, "I Believe Whatever Miss Jiang Says!", is the clearest early answer because it turns Mrs's situation into a concrete plot event. The chapter turns that into something concrete by moving from But Jiang Li seriously shook her head, "No, Aunt Zhou, this matter...
Chapter 273, ""Justice Will Eventually Triumph Over Evil", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. It opens with Jiang Li, who was reading a book, suddenly jumped in fright.
Chapter 292, "Coming and Going, Gathering and Parting, Human Nature", is the clearest early answer because it turns Life Palace's situation into a concrete plot event. Early on, Jiang Li slowly lowered his hand.. By the end, We might not see each other for quite a long time." Jiang Li nodded....
Chapter 83, "Can Actually Carve Flowers?!", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event. Early on, When they received the task, the three of them were already....