Is it illegal to resell Nike, Adidas Puma, products on Shopify store even if you just dropship the products from dh gate or from Alibaba?
Yes, of course it's illegal. You can make a quick buck, but you'll end up with a complaint and you'll eventually will be shut down. Those are clearly counterfeit products. The Federal criminal laws that prohibit any person from trafficking in counterfeit goods and services apply not only to the counterfeiter—the law applies with equal force to any individual or company that knowingly resells a counterfeit product.