If you are on a PC and you see files or folders that start with “._” then it is a MACOSX file. It will sometimes even say MACOSX in the folder name.
These are useless files that are duplicated from the original files when a folder is zipped on a Mac but then unzipped on a Windows computer. We’re not sure why it happens, but please go back to your main folder and you will see the regular files/folders listed below the MACOSX folder - those are the ones you will want to choose.
You can delete the files beginning with “._” if you’d like to.