The most common cause of this issue is that the learner took the Facilitator-led version of the course, which is for learners in a group setting with the quiz administered onsite.
If you are a remote learner taking the course on your own, please choose the "AT&T APNAT Self-Study" English or Spanish version of the course. Once you complete the content in that course, you will be able to take the quiz online. A passing score of 80% or more will be counted as a completed/passed result and you will see your certificate.
Please note that the certificate is for your convenience; an AT&T administrator must still approve your results and process your badge request for you. You will not be able to perform work on an AT&T site unless your badge is current.