Wow, that's quite a number of holes. I'm no expert on that kinda damage, only that if they go around the tree, or girdle it, it could be killed. I'd guess otherwise, it'll just look bad, but once again, I'm no expert, only an expert on my unemployment benefits! lol. Here's some Sapsucker damage at my Aunt and Uncle's house.
Oh My Goodness! What does that to a tree? Is it a WoodPecker Bird that does that?
Is there any kind of Insect spray you could spray on the trunk of that tree, every-so-often, that would stop whatever it is from drilling holes in that tree trunk?