@ThanaG - welcome to the community..
you could create this type of scenario in two separate typeforms. the first to watch the video and then when they are done, they click the link below the video and are ‘redirected’ to the quiz typeform.
this would require using the ‘redirection on completion function’ as well as passing any hidden fields you want (if you have asked for name and email before the video for example, they would need to be passed to the second form in the URL used to get the user to the second form).
this would allow you to ‘physically’ separate the video from the questions but it does not guarantee that the user will have watched the entire video before clicking. you would need to provide that instruction to them on the typeform ie in the description field.
you should be able to search for both ‘redirection’ and ‘hidden fields’ posts here in the Community and in the Typeform Help Centre to find the details about how to use both of these functions
cheers
des