If they are honey bees,
DO NOT KILL THEM!!! Look on the internet, for apiary or bee keepers, in your area. Pest control companies may have access to them as well. Honey bees are becoming more rare now and bee keepers can really use them. They will attract them out with a queen and then take the whole nest away for you, for free.
When I was a "bug guy" we never killed honey bees, as a policy. If someone demanded that we "slaughter them all", we'd make them sign the big, long form getting us off the hook, if the honeybees in their 300K home all died and then did not keep the honey cool anymore so it all leaks into their expensive ceiling.
600 pounds of leaking honey is known to attract ants.
Never run from them. I used to love treating yellow jacket nests, in short sleeves. The technique is, you see where the yellow jackets are entering and leaving and what direction they take. Mostly they are all going one or two directions. Stay out of those lanes of traffic and they ignore you,
unless you move suddenly!
You walk up to the nest, take your bulb duster and stick the tube right through the paper of the nest. Give it two slow squeezes, then slowly back up. The YJs come SWARMING out and.... ignore you. If you run or make *ANY* sudden moves, you are scrod.
Don't hate me because I can conjugate that verb
Just back away slowly. Like 1/4 walking pace.
Honeybees are like little babies and bumble bees are like little teddy bears with wings. Don't kill those.