Hi AleeyaEryna,
Thanks for using Apple Support Communities. We understand you're seeing an alert regarding your Apple ID. Does this continue after restarting your device? Restarting is a simple step that can resolve a variety of concerns. See how to restart here:
1. Press and hold either volume button and the side button until the power-off slider appears.
2. 
3. Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
4. To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo.
See more about those steps here: Restart your iPhone - Apple Support
If restarting doesn't help, reach out for additional assistance here: Get Support
Thanks.