Hi Sami,
Please note that passing AZ-305 by itself isn't enough to earn a certification. You must also have Active Azure Administrator Associate (AZ-104) certification.
Your certificate should be on your Certifications tab. If it isn't you need a support moderator in Microsoft Credentials forum to help you. To contact them please ask a new question in Microsoft Credentials forum using link below:
https://trainingsupport.microsoft.com/en-us/newthread?threadtype=Questions&forum=mcp
Please click Accept Answer and upvote if the above was helpful.
Thanks.
-TP