uninstall Apple Store, which comes pre-installed in iOS, to stop getting these notifications
edited post. The original description & title was me complaining about this notification thinking it was default behavior of iOS, not knowing it came from the Apple Store
So it is kind of like the equivalent of GetApp and Mi Store, just like on Mi phones. Many users also recieved similar spammy notifications on newer Xiaomi product, and removing it was a pain with adb shell, because sometimes the phones would be bricked. There were also other bloatwares/spywares like ad-infested lockscreen and file manager. See the uncanny resemblance?
deleted by creator