I would recommend contacting the mendix academy team at Academy@mendix.com - they should be able to look into your particular case and see what's going on and when you might receive your certificate.
Hi Sakthipriya,
To ensure the highest quality assessment, exams undergo a thorough review process to verify that all rules were followed during the exam. Consequently, it may take up to three business days, excluding holidays, for your results to be available on your portal.
Mendix Academy (academy@mendix.com) will contact you directly about your results soon.