If you are looking for the Apple App Store, please visit App Store.
App Store Connect is an application that allows registered developers of apps for Apple platforms (iOS, macOS, etc) to publish and edit their applications, & view its sales & reviews. It is available as an iOS & iPadOS app, and available on appstoreconnect.apple.com for other devices.
2018-2020[]
This icon was launched on June 6, 2018 with the announcement of App Store Connect on Apple's developer website. It showed the current version of the iOS App Store logo but swapped the colours of the background & foreground.
2020-present[]
This icon was launched on October 7, 2020. It added a new layer of depth and a thin, blue box around the edges.