I answered MCQs but I cannot find my certificate.

Only when you complete the test with a score higher than 80%, the certificate is generated and the credit is assigned to your EU-ACME account.

You can find the generated certificates online. Click on Certificates in the top menu. You will have to log in first.

The certificates are assigned to your account together with the credit.  Just log in to MyCME and got to Credit Registry Report. Click on Show details button.

The new box will open with more information and certificate. You may download your certificate from there as well.