When you take the GMAT, you will be asked to select up to five schools to receive your scores. You can also choose to send your scores to additional schools at a later date, for a fee. Once you have sent your scores to a school, the institution will be able to view your scores as part of your application.
Additionally, schools that you have applied to will be able to see your scores. However, the scores are not public information. It’s unlikely for them to be publicly available for anyone who’s not authorized to access it.
You should also note that GMAT scores are just one of the factors that business schools consider in the admissions process, so even if your score is not as high as you would like, it’s still possible to be admitted to a program if other aspects of your application are strong.