Few days before the planning date
What could Scrum Master do before this date in these few days?
@Saeed I really could not follow your question at all
One thing that could be done is to help the Scrum Team prepare for the Sprint Review or help the Product Owner find effective ways of reordering the Product Backlog and incorporating in feedback from the Sprint Review for future Sprint Plannings.
There's plenty of things that could be done depending on the need at the time.