Hello afsah257,
Welcome to Apple Support Communities!
If we understand your post correctly, there is an icon on your screen that when you tap allow it doesn't go away. We'd like to help!
Let's try restarting your phone to see if we can get the icon to disappear.
How to restart your iPhone X, 11, 12, 13, or later
Press and hold either volume button and the side button until the power-off slider appears.

Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo.
Restart your iPhone
Let us know if you have any questions.
Thank you for using Apple Support Communities.
Take care!