Wrong Apple Account in App Store
when i open app store it generates an apple id that is not mine and no option to change it
[Re-Titled by Moderator]
Question marked as
What device are you using?
Have you tried to sign out of the currently set App Store account, then sign in with your preferred account?
In iOS open the App Store app, touch on your face icon on the top right, and scroll down to the very bottom of that screen to the Sign Out option.
On a Mac open App Store app, use the 'Store' option in the Menu bar, and choose Sign Out.
Then sign in with your Apple Account credentials.