How do I report an unauthorized copy app uploaded to App Store?
Try getting in touch with Apple via the App Store Content Dispute page.
If you believe that an application or Search Ad available in the App Store violates your intellectual property rights, you can use this form to submit a claim to the App Store Legal Team.
If you suspect copyright infringements, you can use the info provided in the Legal Claims of Copyright Infringement page.
Note: Please don’t treat this as professional legal advice of any sort. Just a couple of pointers to get you started towards potential resolution.