Looking for help transferring save

been trying to move a minecraft save of mine from years ago to a different account, I drag the world into the middle and go to click the “change” button but no profiles are listed
I do have profiles saved on the usb, though
some advice on how to fix profiles not appearing would be helpful, cheers

Click Manage next to it first and select a profile as a favourite. Then close that screen and click Manage and your profile should be there.