I passed my HCA last Wednesday, but I haven't received any confirmation/notification of my passing score or a certificate.
Every other vendor I have ever done an exam with (that's a lot of vendors!) has always confirmed my passing score instantly either via an exam centre print out or via an email, and then either sent me a certificate. In the case of AWS, for example, they email you your certificate and confirmation of your passing score immediately after passing the exam.
Anyway, I haven't been able to find out when (or if!) I'll get anything from Hortonworks. Does anyone have any information on this?