The short answer
Creating an Amazon storefront means getting approved to the Amazon Influencer Program. Apply at affiliate-program.amazon.com, connect a public TikTok, Instagram, YouTube, or Facebook account with 1,000+ engaged followers. Approval typically lands in 1–5 business days. Once approved, you'll claim a storefront URL at amazon.com/shop/<handle>, build Idea Lists, and start posting onsite shoppable videos.
The program is free and pays three ways: commission on sales (1–10% by category), Onsite Commissions on shoppable videos (1–5% bonus), and Creator Connections brand deals ($100–$5,000 flat per post).