This currently is not an available feature but you can send a course completion message using automation
Currently, you can use email merge /contact tokens that are saved with the score of the course completion and make a nice looking email that can be used as completion.
Note: our team is working on a solution for this that would allow you to customize the certification with your logo and message.
Details to follow mid-Q3 of 2020
If you need this as part of your solution faster Impulse Creative can make something custom for your organization/client.