I have a Unity Project saved to a USB but I am not sure how to import it into Unity. When I go to open it in File Explorer, it says “not a Unity project” and just takes my into all the folders. I also zipped it and tried to import it that way but the format isnt recognized either.
What are the folders that you have in that project?
If it is really a Unity Project then you may try opening the unity editor,create a new project and then drag and drop your project folder into the new one. I follow that way for importing projects.