A possible concise summary is:
Courtney Cox, who played Monica on "Friends", quizzes Charlie Puth, a self-proclaimed number one fan of the show, on various trivia questions about the characters, the plot and the quotes from the sitcom. Charlie impresses Courtney with his knowledge of musical notes, finishes the lyrics of "Smelly Cat", and wins the coveted Geller cup. They also sing the theme song together and promote more episodes of Quizzed.
Here are some key facts extracted from the text:
1. The text is a transcript of an episode of Quizzed, a show where celebrities test their knowledge of pop culture.
2. The episode features Courtney Cox, who played Monica on Friends, and Charlie Puth, a singer and a fan of Friends.
3. The episode has three rounds: True or False, General Trivia, and Quotes.
4. Charlie Puth wins the Geller cup, a trophy that Courtney Cox kept by her bed since the show wrapped.
5. The episode ends with them singing the Friends theme song and promoting more episodes of Quizzed.