So does this mean it’s only illegal to transit on those frequencies and if I only use them on FRS and not GMRS that I can still use as FRS with transmit I can still use them or only to listen to emergency freq and transmit on part 90 (business) freq only?
Amateur radio operators can use any equipment no matter if it has FCC certification or not. They can also build their own equipment. Other radio services require FCC certified equipment.
An amateur radio licenses does not cover frequencies in other radio services.
A GMRS licenses does not cover frequencies in other radio services.
Look on the back of the radio and see if it says Part 90.
Most Baofeng UV-82s don't have FCC certification. Some of them have Part 90 and some are a different model UV-82C which is Part 90.
A Baofeng UV-82 without Part 90 is not legal to transmit anywhere except amateur radio frequencies by a licensed amateur radio operator. You can't legally use it for anything else except for receive only.
A Baofeng UV-82 or UV-82C with Part 90 certification is only legal to use on Industrial/Business Pool or Public Safety Pool frequencies by individuals who are authorized by a licensee in those services. It is still not legal to use on FRS, GMRS or MURS. In this case it is even illegal to program transmit frequencies in the radio that the user/licensee is not licensed to transmit on.