Hi Nikhil,
First, please note that you must also have Active Azure Administrator Associate (AZ-104) in addition to passing AZ-305 to earn a certification. If you don't have this then you need to pass AZ-104 exam and both certifications will show up.
Second, if you meet all the requirements please check your certifications tab to see if your certification is there. Sometimes it can take several hours after you pass exam for certification to show up.
Please click Accept Answer if the above was helpful.
Thanks.
-TP