Melons have female and male
Melons have female and male flowers. Bees have to transfer pollen from one to the other. 1. Check your fruit. Sometimes it takes a few weeks to see the female flowers and you'll just see male blooms. The females have swelling balls (little melons) underneath. 2. If you have female blooms and no fruit, the usual reasons are high temperatures or lack of pollinators. Do you see lots of bees in the morning visiting the flowers? If you don't have bees, you could explore hand pollinating (and planting bee plants next year!).