Business reports provide sellers with important data about their inventory, orders, payments, and other key business metrics. There are several types of reports including fulfillment reports, payment reports, and FA reports. Fulfillment reports like the orders report and weight anomaly report help with inventory reconciliation and order tracking. Payment reports like the sales report and order payment report provide order to cash reconciliation. FA reports provide data on consignment inwards and recalls to help with warehouse reconciliation. The tutorial provides steps on how to access and analyze the different reports to gain insights and reconcile key areas of the business.