Pumpkins Bloomed But Did Not Set Fruit

Just take a pollination brush, or a thick makeup (blush) brush.
Carefully open a male blossom, dip the brush inside, wiggle it around a bit, the pollen will collect on the brush fibres, then open a female blossom, and wiggle the brush around in there and you will have "hand pollinated" that blossom. Kinda like artificial insemination. Google how to grow pumpkins and learn the diff between male and female blossoms, the rest just takes minutes.

Bees are dwindling in numbers which further hurts natural pollination, but starting a beehive would certainly help the pollinating chores, and at the same time help preserve bee populus.

They probably didn't get pollinated. No pollination means flowers but no pumpkins will grow. I would just do a search engine search for "how to pollinate pumpkins" or something of that sort.