Open files from multiple folders and execute

Hello Guys,

I have multiple files in multiple folders, I like to know is this possible to open files automatically from folders and execute the action defined in the PS.

Example: I have folders1 to folders12 (Folder name will be change regularly), I have 5 files in folder1, 10 in folder2 and 7 in folder3,.....and so on.

I need a script to open the files one by one and perform the action in PS and close, once all the files are processed from folder1 the script need to look for folder2 and till the last folder. Is this possible? looking for advise.