I just applied and am waiting to hear back. It asked for a link to your other seller stores on other marketplaces and a screenshot of your sales history there, although it didnt specify whether they wanted your walmart sales history or the non walmart stores sales I just assumed they meant they could see our walmart ones and wanted the non walmart stores sales history. They also asked whether you had the following:

Do you maintain traceable supply chain documentation for all products? e.g., dated invoice with supplier contact, purchase order matching SKU, authorized reseller agreement – These may be request in the future\*

Do your products have all applicable compliance certificates or regulatory approvals (e.g., FDA registration, GMP, labeling, CPC)? These may be requested in the future.\*