Metadata in ODK

I would like to know if there is a way to see the metadata in the ODK so directly in the application (interview start time and interview end time)

You can easily see these by adding them to instance name.

yes you can display them on screen in a note in the same way you would for another field. if you have a "start" question with a name of "start", you can make a note question which refers to ${start}. It works the same way for all kinds of metadata

I have a sample form for metadata:
metadata.xlsx (5.2 KB)