BigCommerce site: Assign proper categories to 715 products

We have recently migrated 715 products to our BigCommerce site. The products are displaying on the front-end where visitors can see the product's details (but not the images, yet). We need to have the products assigned to the correct product categories from the admin panel. I will provide a spreadsheet that has the SKUs in Column A on the left, and the categories that that product must be assigned to, in Column B. Many of the products have been assigned to the wrong category. In this project, you will use the aforementioned spreadsheet as your guide: When you complete the project, the individual products must be in the correct categories and not in any incorrect categories.