From the documentation, the Wild.Match method:
Compares the specified string against the previously-parsed pattern, and returns True if it matches.
The wildcard object works on strings. It doesn't have anything to do with searching for files in folders, although you can combine it with other things to do that.
For example, you can use FSUtil.ReadDir to get a list of files below a folder, and then use a Wild object to filter those by wildcard.
A full example is here: