How difficult would it be to learn Scrum for non-IT background professionals?

It is not difficult at all. Scrum is a framework for iterative and incremental ways of working. The work content can be anything that needs explorative development. Our recommendation is to go for the Certified ScrumMaster (CSM) session since this helps the learner learn the basics of Agile and Scrum and the details of a team leadership role called Scrum Master. This program is usually delivered in 2 days of live interactions in the face-to-face classroom or a Live Virtual Classroom. Completion of this program will also help you in earning a certificate called Certified ScrumMaster (CSM) from Scrum Alliance