You're not familiar with Linux. Every file in Linux has an "owner" (which user it belongs to) and an access mode. Mode will usually be listed as a series of digits, like 0744 - it's actually a series of bitfields. As far as I know the leading 0 doesn't mean anything. The 7 means the owner has full permissions (read, write, execute) while the following 4s mean that other users are only allowed to read the file.
In Linux, folders that start with "." are hidden, so it may actually be there but invisible. If there's a "Show hidden files and folders" option make sure it is enabled, otherwise you'll have to enter the name manually to open it. (same as hidden files and folders in Windows in that regard - even if you can't see them you can access them by typing the name)