Q.Why Are Pockets Of Laurel Leaves Turning Brown
These are well established Laurels with proper growth in spring as well as bearing fruit after blooming. Just within a week has this problem happened. No sign of mold, mildew or bugs on the branches.

Certified GKH Gardening Expert
Unfortunately, your photos did not come through. I suspect the issue is microbial, though I couldn't say which. Here are two articles that will be most likely:
https://www.gardeningknowhow.com/plant-problems/disease/fire-blight-remedies-and-symptoms.htm
https://www.gardeningknowhow.com/plant-problems/disease/verticillium-wilt-treatment.htm