If a SCORM 2004 course does not send a scaled score. Your SCORM Engine has a package property built in to use the raw score as the scaled score. You can update this in the same way you would any other package property...
2. You can update the SCORMPackageProperties table manually, in this case, you would want to update the scale_raw_score to true so that you will be using the raw score as the scaled score...