Hello! The tomato blooms look normal to me. Sometimes not every bloom produces a tomato. About the zucchini, the ones that are drying up are simply female blooms that did not get pollinated. As for the blueberries, I not sure about them, but I suspect you need a specific fertilizer for them. The leaves should be a dark healthy green, not pale green, which usually indicates a nutrient imbalance. I'm not sure about the spots, it may be a leaf disease, someone else might have more info about that.
