I think that may be it, MsJustice. I did start getting fruit to form back about mid-July and when I looked up those temperatures, while it was hot during the day (101 plus) while it was flowering, it was during a cool stage (mid-80s) that the squash began to mature.
It doesn't stay hot all day here either, it will drop down to the 50's at night, so I'm getting pollination, it's just too hot for it to fruit. I had thought excess heat only affected pollination, seems it also prevents fruit to form.
Thank you for helping me figure this out!
I'm installing shade cloth tomorrow over my tomatoes, some it it will cover my squash, though not all, but maybe a little shade will help.
First time I'm growing vertically this year,
https://imgur.com/a/fPpgs8j