Q.What Is Causing The Viburnum Bark Destruction Shown On The Picture And What Can I Do About It.
Bark damage is a uniform waffle effect. We see no bugs.

Certified GKH Gardening Expert
Unfortunately, your photo did not come through. I am unable to diagnose the issue. It could be a crust fungus, or even the a more deadly bracket fungus (unfortunately, there are many types) from the description.
Here is an article for more information:
https://www.gardeningknowhow.com/ornamental/fungus-lichen/tree-bracket-fungus.htm
Here is more information on the care of Viburnum:
https://www.gardeningknowhow.com/ornamental/shrubs/viburnum/viburnum-shrub.htm