Ranking as high as possible means that you have more choice in deciding how to serve in the armed forces. In particular, jobs with high demand and low limits will have a higher minimum than ASVAB.
Likewise, less popular jobs earned lower returns than ASVAB. It will also increase your chances of getting hired through Andy’s ASVAB Class especially for the career you desire, and in all likelihood, recruits with higher scores will be considered more preferable for promotion.
The test battery consists of 10 separate areas where different skills are assessed. The final ASVAB score for assignments in each branch consists of the combination of these areas.
Word Knowledge (WK), Paragraph Understanding (PC), Arithmetic Thinking (AR), and Mathematical Knowledge (MK) were combined to create the Armed Forces Qualification Test (AFQT). The AFQT is the determining factor whether or not to be recruited into the armed forces! It is a basic intelligence test using words and numbers.
Other ASVAB work products for each military industry focus on your true calling. For example, if you're having trouble understanding one of the words in this article (or the definition of "Professional Skills Battery for the Armed Forces"), consider the tutorial!
Otherwise, there's a risk that you'll only get ASVAB results for tasks you don't want to do (or aren't accepted at all), which is not recommended. They are technical and an indicator of where your talents are being hidden. Like AFQT, there are opportunities in this area to improve your ASVAB score for employment.