“Webmaster Config” files: It is actually “web ownership verification file”.  It is a txt file. I need your assistant to upload the file into the root directory, the same directory to www.sc.com/.  In addition, upload verification file is not the only way. If upload file does not work for you, you can try html meta tag or DNS record deployment.

webmaster verification.jpg

FYI: https://support.google.com/webmasters/answer/9008080?hl=en