First of all Congrats John123.
Not all states require ABET degrees. Several states have additional time experience requirements to qualify for the FE and PE based on experience. In NY for example you site for the FE with 6 years of experience without a college degree and an additional 6 years to sit for the PE. With a bachelor's degree without ABET accreditation, you get 2 years of educational credit and can sit for the FE with 4 years of professional experience.
However, if the program was ABET accredited it would significantly reduce the amount of time to sit for the FE and potentially the PE as well.