Target a show that suits your talents. Watch the show. Game show people don't want to teach you about their show. Producers want contestants who look relaxed and can handle a buzzer, a wheel or can correctly phrase an answer. Dress for success.
Good grooming does count.
Watch who looks great on your show of choice and copy the look. Chicago, you have an advantage. Game shows love to tap people from out of town. But remember, all expenses related to auditioning and appearing on a show are your responsibility. For information on auditions, contact the game show directly.