Why does my SD Sony card makes too many folders for saving photos from my camera?

I have a Nikon camera and when I copy photos from SD card the photos are in folders named Nikon 100, Nikon 101. If i cut the photos to the computer, the folder stays empty and no pictures are saved in that one and new ones are saved in new made folders… So right now i have folders from Nikon 100 to Nikon 120. Should i delete the old folders or?

First it's the camera not the memory card. The card has nothing at all to do with it. What the camera is probably doing is each time the date changes it's creating a new folder… At least that's what it sounds like to me.

Second what you should be doing is uploading after every shooting day then formatting the card in the camera to clean it and prepare it for the next shooting day. These cards love to fail if you use them for storage so that's ill advised.

So if your format after every shooting day then there shouldn't be any group of folders but only one created on that day.

The camera is creating the new folders, not the card. If you dig around in the menu, you can almost certainly turn that "feature" off.