Use in the field the Viewfinder App. It stores all exposure data in a particular EXIF field along with timestamp and gps location data.
JPGs are saved in the standard image gallery from where they can be transferred by any method to the desktop – I use Nextcloud.
Then drop the Viewfinder images to ContactPrint that produces a neat PDF with all data side by side together with a thumbnail. Save the PDF next to the scans (where the data will be found by Spotlight). Print and file the sheet next to the film and you are done.
Both iPhone and Web App are free.