What Is Wrong With My Crab Apple Tree’s Bark (holes, Peeling, Etc.)?

Question

Attaching a picture

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Answer 1

Well it could be woodpecker damage or tree borers. Let's hope for woodpeckers.

https://www.gardeningknowhow.com/plant-problems/pests/animals/woodpecker-damage-trees.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-borer-insects.htm
https://www.gardeningknowhow.com/plant-problems/disease/shot-hole-disease-fungus.htm

you should probably contact a certified arborist or at least consult with a local agricultural extension agent. This link might help:
https://www.gardeningknowhow.com/extension-search