Hello Joycevu2002,
If you're having troubles setting up Find My on your device, take a look at the steps here: Set up Find My on your iPhone, iPad, iPod touch, or Mac
We'd recommend checking the following as well:
- Try without being connected to Wi-Fi to see if that also provides the same result.
- Ensure your device is up-to-date: Update your iPhone, iPad, or iPod touch
- check to ensure Location Services are enabled: Turn Location Services and GPS on or off on your iPhone, iPad, or iPod touch
Take care!