Hi,
Did you complete the prerequisite certification exam(s)? Depending on which prerequisite, you would need to pass another 1 or 2 exams. Microsoft 365 Certified: Enterprise Administrator Expert requires you to pass a total of 3 or 4 exams, depending on prerequisite certification chosen.
For exams/training/certification questions you need to post a question over in Microsoft Certification Forums:
https://trainingsupport.microsoft.com/en-us/mcp/forum/mcp_cert
-TP