The good news is that likes DO have value - by liking a page a user is opting in to receive further updates from that page. So if someone likes your business page and you keep it updated regularly with new content, they'll see that content in their news feed and they'll be more likely to engage with a comment or click-through.
Once you've received 30 or more likes you'll have a new panel available on your business page called Insights. The information on the Insights panel is only available to administrators of the page, and it provides some excellent data for evaluating your Facebook presence beyond how many likes you have.
One of the most important statistics you can find with Facebook Insights are the number of people that are visiting your page on a daily basis to consume the content you post to it (otherwise known as active users). It makes sense that if someone has followed your content and has also chosen to interact by leaving a comment or visiting a link you posted, they're more engaged with your brand as a whole.
It could be that the content you published on a certain day was particularly well received - make sure to use this to your advantage! Ultimately your followers will tell you what they like and don't like based on their activity on any given day, so if you receive a positive or negative response be sure to tailor your content appropriately.
Remember that your goal when using Facebook as a small business tool is to get potential customers to learn about your product or service by engaging in your content. If you share useful information and provide your followers with a pleasant experience they'll remember your business when it comes time to make a buying decision.