Certified GKH Gardening Expert
The tree should be fine. Don't put anything on it though, as this can cause more harm than good. Tree wounds will generally heal themselves. The following article should be of some help to you: https://www.gardeningknowhow.com/ornamental/trees/tgen/repairing-tree-bark-damage.htm Just as a precaution, keep an eye on the tree for any signs of pests or disease around the damaged area. If you spot anything, treat the wound with a fungicide like neem oil.