The certificate takes 3-4 weeks for delivery depending upon the country you reside in. It is sent through registered air mail.
If you are in a hurry to receive your certificate, you can order it through FedEx by paying the express delivery charges. The option to pay the express delivery charges appears after passing the test. It usually takes 3-5 days to receive the certificate through FedEx. When you order your certificate through express delivery, you are also issued a soft copy certificate that you can instantly download and print.