Alex Fedotoff runs a Facebook group with nearly 50,000 members dedicated to intermediate-advanced Facebook advertisers and eCommerce entrepreneurs, who are spending $5,000 - $1,000,000+ per month on ads. If that's you, this might be the right place to pose problems and learn from marketers.
While not specifically about ecommerce, r/smallbusiness is a great place to ask questions and learn from others who are starting, owning and growing a small business.
Managed by Trackify, this Ecommerce Facebook group has 50,000+ members and is all about using the right approach and tactics to scale your ecommerce business to 8 figures.
This group by Justin Cener is a general purpose ecommerce group with over 50,000 members where you can learn about dropshipping, influencer marketing, and using FB ads to build an online business.
This super active group run by Nick Peroni is for people looking to start their ecommerce journey and build a successful dropshipping business. There's a 94,000+ strong audience that can help you with your questions in this group.
This is the official Shopify Community forums where partners and merchants meet to discuss ideas, get feedback and help, and learn from each other.