In the absence of regulatory bodies, professional sanction and the like, its worth even less than most accreditations in the tech world.
most credible engineering programs maintain ABET accreditation, as it has been required for graduates to become PEs [0].
[0] i recently heard that berkeley EECS is dropping its ABET accreditation, as this is no longer true: https://eecs.berkeley.edu/sites/default/files/abet_letter_to...