It is critical that you, the leader of your business, understand your numbers. There are two types that are most important: your financial numbers (how you make and spend/ invest money) and operational (how what you do contributes to the money flow).
The more you understand the key ones within those two types and how they relate and interact with each other, the better decisions you can make for your business. The better results you create. And I'm always happy to help you with that :).