Hi @petlover15255! Gabby here from the Community Engagement team at Spocket.
It's been quite a while since you posted this, so I'm wondering if you were able to figure this out. Regardless, I'll mark your topic as new so a member from Shopify can hopefully assist you!
Additionally, is Oberlo/AliExpress the only option you're considering to integrate with the Shopify store you wish to duplicate (or have duplicated if you've already found an answer to your inquiry)? If so, I'd like to invite you to check Spocket out cause I highly believe it can offer more for your second store - even your first store! It's a dropshipping app which gives you access to a lot of EU and US suppliers. This mainly entails two things:
Given these, I do hope you get to figure out how to manage two stores. Or if you've already managed to create two and solve the issue you raised, I hope it's going well! Regardless if it's the former or the latter, Spocket can help you improve your store's potential, so I do hope you give the app a shot. You can learn more about it by visiting Spocket's official website. All the best!