Where is

[Opserty]

Yes that is your forum root.

Use your common sense. Look how your forum root directory also has a clientscript folder. You need to upload your files so that they match up, so the contents of the clientscript directory are uploaded automatically to the clientscript directory on your server. You need to upload the contents (i.e. what is inside) of the "upload" folder to your forum root.

You probably won't overwrite the entire images directory, there is most likely and extra image in "upload/images" folder, that needs to be on your folder.