Hi , @gstlouis
According to your description, you want to get the return from the flow's action "Get files".
This is my test flow, you can refer to :

This is my app , you can use this code to get the result from the flow .
Set(data2,ForAll(Table(ParseJSON( 'getfilesproper-2'.Run().result)) ,{FilenameWithExtension: Text(ThisRecord.Value.FilenameWithExtension)
,FullPath:Text(ThisRecord.Value.FullPath),Link:Text(ThisRecord.Value.Link)}) )
The result is as follows:

Best Regards,
Yueyun Zhang