I'm new to Pega marketing, please bear with me for the basic questions.
How the Interaction history is storing in pega marketing and can we look at the interaction history table in pega, if yes How?
The simple answer is yes. You need to first understand DSM first (your question is actually DSM related, not Pega Marketing). The normal path of learning is to take PegaAcademy courses of DSM (Essentials and then Advanced) and the PM (Essentials and then Advanced). You can also download a VM from PegaAcademy to learn the system along the way. See the attached screenshot for the interaction history related tables (under data schema).