How do you create an app when you enter a passcode it tracks attendance and location of user?
Please search the community. There are many topics covering attendance management and location.
Welcome.
Here is an example that shows part of what you desire using a CloudDB (or perhaps FirebaseDB) rather than a GoogleSheet that you might find useful:
Here is another that does something similar and uses a passcode How to broadcast a GPS location and share the information on a map with others in real time..CloudDB
Thank you so much for your help! I just need assistance in the blocks screen.
It should be simple to add code then click send?? The location, timestamp and registration id details then should be added to the spreadsheet.
Show us your sheet, and what you have so far in blocks.