Hi,
Sorry for the trouble caused at your end.
As per your description, we’ve tested at our end by submitting the responses for the Quiz in the Microsoft Forms and the users who submitted the responses can see the View Results once they submit the responses. Since at students end the View Results is not displayed after submitting the responses, we assume Quiz should be corrupted somehow. To narrow down the problem, we suggest you duplicate the Quiz and check the outcome. Follow the below steps:
Open the problematic Quiz in Microsoft Forms-> Share-> + Get a link to duplicate-> Copy the link and paste it in the new tab of the browser-> Duplicate it-> Change the Quiz name as per your requirement-> Click on three dots beside Send-> Settings-> Make sure “Show results automatically” option is checked-> Now click Send and copy the link to share with students to check the outcome.
In addition, we also suggest you check whether this problem happens with the new Quiz.
Appreciate your understanding.
Best Regards,
Chitrahaas