To view your GMAT score, refer to the link in the email sent to you from Pearson VUE within 20 days of completing the exam. MBA stands for Masters of Business Administration and is an academic degree, not a test with results; the GMAT is the degree program's entrance exam.
The GMAT, often conflated with the MBA, is the entrance exam used to assess students for graduate programs, including programs for an MBA. The exam results can be viewed online via a private temporary hyperlink sent to the test taker by the company Pearson VUE.
Although there is such a thing as MBA rankings, these apply to business schools, not private individuals, and are subjective ratings based on polls. The results of these rankings can be viewed at websites such as TopMBA.