Tree was about 15 ft tall. It has sentimental value as my mom who passed gave it to us and helped us plant it. Will it ever look like a normal tree? thanks
Catalpa will readily regrow.
Catalpa will give you new growth willingly. It's up to you to prune for the shape you want. Right now, cut the bruised stub cleanly for aesthetics and watch for new growth where you want it.
Remove growth where you don't, because your tree will be bursting with energy to rebuild its chlorophyll-capturing leaf surface.