Q.I Have Several Mock Orange Shrubs All Bloomed In Spring, One Did Not, And Did Not Even Grow Leaves, I Fertilized, However I Do Not
know what to do or if it is dead I added 2 pictures, one of shrub after flowering-healthy green. The other no leaves, nothing

Certified GKH Gardening Expert
Unfortunately, your photos did not come through! There are a couple of possibilities of what could have went wrong.
Sometimes, some specimens are not as hardy to disease as others, such as Verticillium Wilt Disease. It can destroy one or two, but not all of your shrubs.
Another thing to consider is pests in the area. Moles, voles, and other burrowing creatures can destroy roots or cause infections while doing so.
I could recommend taking samples and photos up to your local extension service. They may be able to help:
https://www.gardeningknowhow.com/extension-search
This collection of articles will offer more information on the subject of the shrub:
https://www.gardeningknowhow.com/ornamental/shrubs/mock-orange