Store Scope is one of the typical view in scope in Magento 2. It classifies by name in each every level, which can change scope to different levels. It is necessary for the multi stores and big businesses to change scope level.
On the top-left side of the page, it can be seen that the gray bar is current scope chosen. The final setting in scope will come to Default Config. In case, if users choose the restricted access, only they can access and change the store view.
On the right side, the configuration box with many settings current applying or default. It is impossible to change the chosen value, except for deleting the current checkbox and adding the new one. The system will send you the confirmation to be sure whether you want to change scope or not. Without being overridden, the new configuration box will include all of values and items of the old one.
Storesfor all configuration settings
Reference: Magento 2 User Guide
It comes to the end of tutorial: How to Change Store Scope in Magento 2.
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