@Dave234,
The folders you are naming are withing the primary forum directory. Your structure should look similar to this one that I kind of made up!! I figured a picture might help. Notice the following:
1) The top folder is the primary folder that holds the forums and or other items that you may have like shopping carts and so forth.
2) The second folder is the vB folder for your forums. It may not be called forum, mine is not, but that folder is where all of vB resides.
3) All the folders under the second folder are vB folders for the forum. You may have some mods on your forum and they will show up as well.
So by telling you to rename the Upload folder to the name of your forum folder you would be looking at the second one in the picture. However, you will drop the folder onto the 1st folder. The first folder is the ROOT of the forum.
Hope that helps.
Backups of the Database are generally done through PHPMyAdmin:
https://www.vbulletin.com/docs/html/...myadmin_backup