Q.Why are my squash dying off?
They have tons of flowers but but do not turn into fruit, also the fruit that’s growing dies off.
It sounds like you are seeing the male blossoms; that are generally abundant die off. The female blossoms; there are less-these are the ones that form the fruits.
https://www.gardeningknowhow.com/edible/vegetables/squash/female-male-squash-blossoms.htm
You could have poor pollination or Blossom End Rot issues.
https://www.gardeningknowhow.com/edible/vegetables/squash/pollinate-squash-by-hand.htm
https://www.gardeningknowhow.com/edible/vegetables/squash/squash-blossom-end-rot-causes-and-treatment.htm