pls help

Connect iPhone to Computer / Mac

• Settings > Touch/Face ID & Passcode > USB Accessories > [Enable]
• Use your USB lightening cable --> Resolve USB-related alerts in iTunes - Apple Support
• If unable to connect --> If iTunes doesn't recognize your iPhone, iPad, or iPod - Apple Support
• Use genuine cable --> Identify counterfeit or uncertified Lightning connector accessories ...
• Troubleshoot —> Troubleshooting issues with iTunes for Windows - Apple Community
• See how to --> Sync your iPhone, iPad, or iPod using iTunes on your computer ...
• If you are experiencing an issue not listed here, contact support

Which email account are you referring to? Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other

Delete and Add the account watch the three GIFs

1. iCloud
2. Outlook and Exchange
3. Gmail