You may not have gotten a signed certification or degree for your experience, but the benefits of those things are intangible. You are just as well off for your experience at “Wally World” as you would have been if you had been pushing pencils at an Ivy League University. You have real world experience in sales and management, as far as I can gather from your article. You took what seemed like a bad situation and turned it into gold. Be proud of that.