If you don’t yet, Microsoft Forms is an Office 365 services allowing you to setup surveys, quiz or questionnaire quickly and easily.
You can access Forms using the https://forms.office.com/ URL.
These new options (define a stop survey setting [either end date, maximum responses or number of days] and display a progress bar) are available for new and existing forms.
You can access these settings from the Form Settings menu
Then go to the bottom of the Settings menu to find the Stop survey and Display options to display the progress bar)