I don’t know why I cannot find development mode on my IOS 16.0.2. Please help

Why do you want to do this? Unless you know what you're doing, it's probably not a great idea.

To enable Developer Mode go to Settings > Privacy & Security on the iOS device. Scroll down to the Developer Mode list item and navigate into it. To toggle Developer mode, use the “Developer Mode” switch.

Apple Developer Documentation

Also, you should update your phone to iOs 16.1.1. There have been important security updates.

You haven't answered my first question: why do you need to access this?