Technically, "Scripting", in ASP, isn't itself an Object, but more specifically, a pointer to other built-in ASP Objects. So by specifying "Scripting" you are telling ASP that you are looking for an object in ASP's built-in library. For more of these built-in objects, check out
http://www.w3schools.com/asp/default.asp
If you ever use databases in your ASP, you'll notice that when you create ADO objects, your CreateObject call will use "ADODB" (Ex: Server.CreateObject("ADODB.Recordset")) instead of "Scripting". This is because we're telling the ASP interepter that we want to use a different object library specifically for accessing databases.