Welcome to the Q&A Forum

Hi Vernon, to answer your questions... I prefer to put review Schema markup on the home page since it's likely to show up at the top of a branded SERP. There's no telling how Google will use your data. I've seen this Schema work and not work, with no rhyme or reason. Yes, you may embed the AggregateReview within the HomeAndConstructionBusiness tag, but it's not necessary. You can do something as simple as this: Hope this helps! Brodie

Also I would check the sitemap to ensure nothing is limiting specific sites from being indexed.