Read it multiple times to gain a thorough understanding. The connection to your social enterprise is on a strategic level. To incorporate the SDG's into your organisation's impact think about the previous lessons: What is the Why of your social business? - what is your vision? You might have be a higher goal related to the world at large, which is already connected to one or more of the Global Goals.
Below you will find an example of a big Dutch financial organisation. Besides their financial reporting, they presented an impact report . It is interesting to see how this organisation choses a different report to measure impact, related to the Global Goals.