Is there a certificate given on completion of the course?
Is there a time bound or can it be completed at own pace and time?
How to qualify for examination?
Is there a fee?
Sanskrit.Today does not provide any certification. You can study on your own pace.
You can register for the exam at samskrita bharati and to get certificate.
For details: https://forum.sanskrit.today/d/33-pravesha-details-and-enrollment