If you open a store on Amazon but do not have any sales activities, do not actively upload and list products, Amazon generally will not automatically close your store. You can keep the store active for future sales activities.

However, Amazon may review and sort out stores that have been inactive or inactive for a long time. These stores may be identified as "inactive stores" and closed or restricted. Amazon's specific policies may vary, and the decision to close a store may depend on multiple factors, such as the store's activity period, sales records, etc.

In order to keep the store active and avoid possible closure, there are several suggestions:

1. Complete store information: Make sure your store information and settings are accurate and complete, including merchant information, contact information, shipping policies, etc. This will improve the integrity and credibility of your store.

2. Upload and list products regularly: Upload your products to Amazon and list them for sale. Even if you only upload and sell them on a limited basis, continuous sales activities will maintain the activity of your store.

3. Order processing and customer service: Process and ship orders in a timely manner, and provide good customer service. This will build trust and satisfaction, which will help the long-term operation of the store.

In short, Amazon generally does not automatically close inactive stores, but continued inactivity of stores may lead to the risk of review and closure. Therefore, in order to maintain the activity status of the store, it is recommended to conduct regular sales activities and provide excellent customer service.