Microsoft Learn profiles, where your certifications are stored, are self-managed and accessed through your email accounts. If you have lost access to the email account, then it is not possible to access your certifications and you need to recover access to the email account
Try these
Microsoft account recovery form: https://support.microsoft.com/account-billing/help-with-the-microsoft-account-recovery-form-b19c02d1-a782-dee6-93c3-dc8113b20c42
and contact support https://aka.ms/CertificationSupport