Sorry about that. If you didn't get at least 15/20, the test status might go to "Completed" but a re-test is imminent. I vaguely recall seeing at least one such case where the applicant failed the test and the status was set to "Completed" and then a re-test was requested.
If you receive a re-test (which I am almost certain you will), it will be over MS teams with an IRCC official present. The official will show you a PowerPoint slide and you will have to answer the questions orally.
Wish you all the very best for your next attempt.
Good luck!