Determining the number of pillar pages you should have is an important consideration for your website. It depends on the size and complexity of your business, as well as the range of topics you want to cover. Ideally, you should aim to have a pillar page for each main topic or category that is relevant to your industry. This will help organize your content and provide a clear structure for both search engines and users. However, it's important to ensure that each pillar page is comprehensive and covers all the subtopics related to its main topic. Having too many pillar pages can dilute the authority and relevance of each page, so it's best to focus on quality rather than quantity.