Read this in 1993. From what I remember of the paperback cover, it was likely published in the 1970s, but possibly 1980s. A futuristic society records their citizens’ dreams (through their pillows?) and if your number is announced that means your dream will be broadcast to the entire community the next morning. If your dream is somehow controversial or doesn’t fall in line with community standards and teachings, you may be sent for reeducation/punishment. An adolescent/young teenage girl is the narrator. She is super concerned her crush may be revealed in her dreams. It was less than 200 pages. Probably intended for a young adult audience, but couldn’t say for sure.