Q.Figs Are Turning Yellow, Hard, Shriveling
Beautiful figs are not ripening for eating. They are turning brownish yellow and hardening. Fertilized with worm castings in spring. Potted with drain holes. watered daily, recapturing about a medium size bowl of drainage water in bowl placed underneath. Temp has been over 108 degrees for 3 weeks, UV extremely high. Fig is in sun in morning through afternoon then moved to shade.

Certified GKH Gardening Expert
This article should help:
https://www.gardeningknowhow.com/edible/fruits/figs/dry-fig-fruit-on-trees.htm
Here is how to care for them:
https://www.gardeningknowhow.com/edible/fruits/figs/how-to-grow-figs.htm