In general "Certifications will display on your profile within 5 business days after the date of your exam unless there is an account issue that needs to be manually resolved. If there is an account issue, it may take an additional 5 days to display your certification on your profile".
Please make sure your PEGA profile setup is correct as per the details mentioned in FAQ. Email ID used in pearson account should be same as your pega profile email ID.
If your account setup is correct and if your profile is not synced with certification details after the said period, please reach [email protected] .