I am unable to update my iOS to 14 it always just shows update requested

See if anything here helps.

Update your iOS device.        

Get help with over-the-air iOS updates          

Update – Can’t or can’t restore 

Have you tried using iTunes on a computer or Finder if running Catalina to do the update?

 Update software on iOS devices in iTunes on Mac

If you see an error when you update or restore your iPhone, iPad, or iPod      

Hello,

I think you should force your device to restart.

1-Quickly press and release the volume-up button 

2-Quickly press and release the volume-down button

3-Finally, press and hold the side button (right) until the Apple logo appears, and then release.

Let me know if that works.