Q.What Causes Yellow Leaves On Cherry Skip Laurel?
Also have shot holes

Certified GKH Gardening Expert
Unfortunately, many things can cause holes and yellowing of leaves. This can include insect pest damage, fungi, soil bacteria, and other problems. Here are some articles that will help:
https://www.gardeningknowhow.com/plant-problems/pests/insects
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects
https://www.gardeningknowhow.com/ornamental/shrubs/cherry-laurel/dwarf-english-cherry-laurel.htm