Hi Zeeshan,
You should see your certification on your Certifications tab. Under your certification you may click View certification details, next click Print, Save as PDF, under More settings uncheck Headers and footers, etc.
If you do not see your certification on your Certifications tab, please ask a question in Microsoft Credentials forum. There are support moderators over there that will respond within 2 business days. You may use below link:
https://trainingsupport.microsoft.com/en-us/newthread?threadtype=Questions&forum=mcp
Please click Accept Answer and upvote if the above was helpful.
Thanks.
-TP