I need to open my Application

scottie8777 Said:

"I need Apple store on my phone"

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Lost the "App Store" app?:

Perform Two Things:

A. Start with a Restart:

Restart your iPhone, and see if it then is fixed.

Also...

B. Reset the Home Screen Layout...

Go Here: Move and organize apps on iPhone - Apple Support

Scroll to: Reset the Home Screen and Apps to their Original Layout

1. Go to: Settings
2. Tap: General
3. Tap: Reset
4. Tap: Reset Home Screen Layout