I have lots of blossoms and only two small zucchini fruits growing. The leaves are also turning yellow.
Why Are My Zucchini Leaves Turning Yellow
Certified GKH Gardening Expert
It sounds like the plant may not be getting enough water. I would increase water to the plant. Water 1-2 times a week for longer periods rather than daily for short periods to make sure the water is getting deep enough for the roots.