Can someone explain military entrance score jobs?

I've heard that specific military jobs require certain entrance scores. Can someone elaborate on how entrance scores impact job eligibility in the military? I'm trying to understand what I should aim for to have more options.

In the U.S. military, the Armed Services Vocational Aptitude Battery (ASVAB) is used to determine whether a potential recruit is qualified to join, and if so, what job or career field they may be best suited for. The ASVAB covers multiple areas such as Math, Word Knowledge, Paragraph Comprehension, General Science, Mechanical Comprehension, and Electronics Information.

The results of the ASVAB are converted into two key scores: the Armed Forces Qualification Test (AFQT) score and the composite scores. The AFQT score, derived from four sections of the ASVAB (Arithmetic Reasoning, Paragraph Comprehension, and Word Knowledge), determines if you are eligible to enlist. For example, to join the Air Force, a minimum AFQT score of 36 is typically required, while the Army usually requires a minimum score of 31.

The composite scores, also known as line scores, consist of various ASVAB subtests scores and are used to determine job qualifications. Each branch of the military has different ways of calculating line scores. Depending on the line scores, you may be disqualified from some jobs and qualified for others.

So when considering what scores to aim for, you should research the requirements for the specific roles you're interested in. However, it’s generally a good idea to aim for as high a score as possible to widen your job opportunities.