As such, there is no set eligibility criteria set by GMAC, the body conducting GMAT for appearing for the GMAT exam. However, one should always meet the eligibility criteria set by the university/college one aspires to get into after giving the GMAT.

Age criteria
The candidate must have completed 18 years of age
There is no upper age limit for the candidate
If the candidate is between 13 to 17 years old, they should have permission in writing from their parents or legal guardian
Educational qualification
GMAC has not announced any official statement regarding qualification required to appear for GMAT
Candidates who wish to enroll in an MBA program should possess a graduate degree in any discipline from a recognized university
The GMAT exam is designed to be attempted in English; hence basic understanding and fluency in the language is a must for the aspirants. In order to clear the exam, one must have the skills to comprehend the twisted and confusing questions asked in the exam. The exam is tough and complicated; henceforth, its aspirants must have excellent command over the English language.

Other Restrictions: According to the GMAC, any individual irrespective of their gender, age, nationality, religion, academic background, etc. can appear for the exam without any discrimination. This includes differently-abled candidates as well, who are provided with special exam accommodation upon request. For such aspirants, the medical documents that define a candidate’s disability are put confidential, which has been thoroughly described in the privacy statement declared by the GMAC.
https://studyabroad.careers360.com/articles/gmat-eligibility
hope it's helpful

Dear Aspirants ,

We are really sorry to say that you had not mentioned GMAT students are eligable for which exam or not and i belived that you had  forget to mentioned the exam or name or some of infomration which you want to know so kinldy share your queery in proper manner then only we are able to share our accurate answer with you .

Hope it will helpfu

Thanks