Does my business need to succeed to earn my MBA?

In the strictest sense, no. The MBA programme is designed by entrepreneurs to give you the best possible chance of success. If you follow the methodology and apply yourself, your chances of achieving traction and product market fit are very high. 

However, most of the criteria used to grade your submissions and progress are based on your application of the knowledge, tools and frameworks that are introduced - not the results of your business. There are some criteria through the course of the modules where clear business progress will be rewarded with higher marks, but not all business ideas will make it. So it is possible to achieve a high grade, without necessarily seeing your business succeed.