Q.Hardy kiwi
I have 2 females and 1 male plant about10 years old. I get lots of blooms but they all fall off. How can I get them to set fruit?

The two biggest reason for premature fruit dropping is uneven watering and lack of pollination.
Kiwi roots are shallow and they may need to be watering 2 to 3 times a day during the growing period. Drip irrigation is a good set up.
Plant additional flowers that attract Bees to your garden.
https://www.gardeningknowhow.com/edible/fruits/kiwi/growing-hardy-kiwi-vine.htm