I have a fake university degree that I used to gain admission into an MBA program. However, I have now completed my legitimate MBA. Can I solely rely on my legitimate MBA for my career?

Why not? Just remove your “fake degree” from your resume and only include your MBA.

If you have completed an MBA program and obtained a legitimate MBA degree, you should be able to use it to advance your career, assuming that the degree is from an accredited institution. However, it’s important to remember that an MBA is not a guarantee of success, and employers will also consider your work experience, skills, and attitude when evaluating job candidates.