iPhone is disabled

Following this process is the only way out if your iPhone is disabled. The steps given in this link will help you reset the passcode -> If you forgot the passcode for your iPhone, iPad, or iPod touch, or your ...

Connect iPhone to Computer / Mac

Settings > Touch/Face ID & Passcode > USB Accessories > [Enable]

You haven't mentioned whether you have a PC or Mac. However...

1. Use your USB lightening cable --> Resolve USB-related alerts in iTunes - Apple Support
2. If unable to connect --> If iTunes doesn't recognize your iPhone, iPad, or iPod - Apple Support
3. If your computer is a...
   1. Mac --> If your computer doesn't recognize your iPhone, iPad, or iPod ...
   2. Windows PC —> Troubleshooting issues with iTunes for Windows - Apple Community
4. Use genuine cable --> Identify counterfeit or uncertified Lightning connector accessories ...
5. See how to --> Sync your iPhone, iPad, or iPod using iTunes on your computer ...
6. To reset the passcode for disabled iPhone -> If you forgot the passcode for your iPhone, iPad, or iPod touch, or your ...
7. Learn how to--> Update your iPhone, iPad, or iPod touch - Apple Support

If you are experiencing an issue not listed here, contact support

If your computer doesn't recognize your iPhone, iPad, or iPod

If your computer doesn't recognize your iPhone, iPad, or iPod - Apple Support

iOS device not showing in iTunes for Windows

iOS device not showing in iTunes for Wind… - Apple Community