Hello Saifhamed,
If you're looking to capture a screen recording of your iPhone, but you're not seeing the record button in Control Center, you may need to add it back. You can learn how to add the record button to Control Center and record your screen here: Edit Control Center on your iPhone, iPad, and iPod touch - Apple Support
"How to add a control
- Go to Settings > Control Center.
- Tap the Add button next to the app or feature that you want to add.
From here, you can also turn on Access Within Apps, so that when you're using an app, you can still open Control Center."
Thanks.