If you see the following message saying "You Need Permission", it means you are logged in to a personal account and not the school account. You need to switch to the Google Workspace account to access the Google Form.
To switch to Google Workspace account, click on "learn more" link given in the above message. This will open the Google support page.Click on the profile icon on top right side of the page.
A drop down menu with all your Google Accounts will be shown now. Click on the Google account provided by the school to select and switch to that account.
Now you can go back and access the Google Form.
In case it shows account in disabled or suspended or you have forgotten your password, contact the librarian in person in the library