Facebook doesn’t currently offer direct benefits for Google SEO in the form of social signals impacting search results. But, you can use it to build traffic and links to your website and other online properties.
Facebook is one of the fastest growing network in Social Media. One can easily grow up there business using it. And now Facebook is also much fast forwarded and updated. It also provides the facility to boost up your post and advertisement.
Social media signals are consider as a great ranking factors. The more social signals you have the better chances of your site great ranking. Facebook play an important role in improving the overall user satisfaction matrics which is an main ranking factor as per the rank brain algorithm.
By using Facebook we can increase SEO score. By promoting our website in to facebook and creating more visits to our website. By doing this process we can increase our SEO Score. Not only this by using any technique if we increasing our website then enough to increase our SEO Score. That's why we preferred Facebook, now a days everyone are using facebook. Present research after google, facebook is the 2nd trending one to attract the users or to get something new information to users. That's why Facebook promotion is more than enough for SEO ranking or SEO Score.