What is the highest possible ASVAB scores for marine careers?

There isn't a single "highest possible ASVAB score" that guarantees entry into any specific Marine Corps career field. The ASVAB score needed varies greatly depending on the specific job (Military Occupational Specialty or MOS) and the current needs of the Marine Corps.

While a higher ASVAB score generally opens more options, some highly competitive MOS's may require extremely high scores, even exceeding the maximum possible score on individual subtests, to be considered. Other less competitive MOS's may have much lower minimum ASVAB score requirements.

Therefore, it's inaccurate to say there's a single "highest score" that guarantees anything. Focus instead on achieving the highest score *you* can, as that will maximize your opportunities within the Marine Corps.