Hi Assistanceplsem,
For help with activating FaceTime on your iPad, test the steps below found in the article here: If you can’t turn on or sign in to iMessage or FaceTime
"Check your device settings
- Make sure that you’re connected to a cellular data or Wi-Fi network.
- If you're using an iPhone, you need SMS messaging to activate your phone number with iMessage and FaceTime. Depending on your carrier, you might be charged for this SMS.
- Go to Settings > General > Date & Time and make sure that your time zone is set correctly."
Be sure to complete the remaining steps including waiting 24 hours for activation. Create a backup and update your iPad with the steps here: Update your iPhone or iPad
If the issue remains, reach out to Apple Support directly to further assist.
Contact - Official Apple Support
Contact Apple for support and service - Apple Support
Best.