How do I rename a user profile?

Open Windows Explorer or another file browser and open the users folder that you want to rename on the main drive. The folder is usually located under c:\users. Locate the folder of the profile that you want to rename, right-click it and select Rename from the options.

For More Information Please Refer: https://www.ghacks.net/2011/03/28/how-to-change-a-windows-account-name-and-user-profile-folder-name/