Hi @IWantToKnow ,
1.Because we can set the filter condition 'FSObjType eq 1' in the 'Get files' Action, which means only getting the records of the folder, we can get the common numeric ID.

Return:


The Id of the list folder not only gets the Id of the folder, but also the Id of the file. The Id obtained is not our common numeric ID, but a specific identifier.

Return:

2.I use ’Select‘ just to display the folder ID and folder name to you more intuitively.
It has no other meaning. If this step is not used in your flow, you can consider deleting it.
Best Regards,
Sunshine Gu