Hello @StaceyMurray 

It should generally be pretty quick after the students have watched it. A good rule of thumb is to give the data up to 24 hours to reflect but it doesn't typically take that long. If you're having issues with it right now, I believe Canvas has had a few issues with insights not collecting data the last few days and the engineers are aware and are working on it. You can always contact support if need be. Hopefully this helps.

https://community.canvaslms.com/t5/Canvas-Basics-Guide/How-do-I-contact-Canvas-Support/ta-p/389767