var DBEngine = WScript.CreateObject("DAO.DBEngine.36");
var dbase = DBEngine.Workspaces(0).OpenDatabase(
				"score.xls", false, false, "EXCEL 5.0;");
var rs = dbase.OpenRecordset("SELECT Sum(算数) AS 総得点 FROM [Score$]");

WScript.Echo(rs.Fields("総得点").Value);

rs.Close();
dbase.Close();