Folders in a dream symbolize financial resources or proper identification. Dreaming that your folder has been stolen indicates that someone tries to take advantage of you. Dreaming that you lost your folder suggests you should be more cautious with expenses. You should be more responsible with your money.
Dream dictionary: Folder dream meanings
The folder in a dream denotes to the necessity of organizing skills in your life. Perhaps there are some things that are out of proportion and there are no methods to keep things where they belong to be. Pay attention to the things that were in a folder.