All university credits are relevant to that job, even those humanities courses and whatever. Credits directly relevant to the job skills are more like vocational training; whereas university is supposed to be about education.

Also, one reason some jobs prefer applicants with degrees is because university completion shows that you have some ambition and willingness to work hard toward a goal that is several years away, in the face of deadlines and stress, and possibly financial risk also. They know you've pulled a few all-nighters to get through.

In other words, you're gone through a pretty tough four year (or more) project: to produce a degreed version of yourself.

That degree shows that you can work, even if you don't have employment experience.