This will be improved in the future with upcoming new features, per here:
When will Microsoft Stream support interactive quizzes and analytics?
We are working to bring interactivity to the Microsoft Stream video player so you can build, upload, play back, and share more Mix-like content on Microsoft Stream (that includes quizzes, ability to jump to different parts of the presentation, and more). Over time, we'll enhance the analytics capabilities for videos on Microsoft Stream. For more information about the current capabilities of Microsoft Stream, please click here.