Facebook is the largest social media network.  For this reason alone, you should create a Facebook Page for your business.  A Facebook Page gives your business a place on the Facebook platform.  You can add contact information along with business hours for your business.  People can share your Facebook Page that will be a link back to your Facebook Page.

Additionally, a Facebook Page gives you an opportunity to post content in the form of text, images and videos that followers of your Facebook Page might find interesting.  People can also directly message you through the Facebook platform.

Finally, if you want to run Facebook Ads, you will need a Facebook page.