No internet connection on iPad

First, are you able to connect to your Routers WiFi network?

Connect to Wi-Fi on your iPhone, iPad or iPod touch – Apple Support

Connect iPad to the internet - Apple Support

If, having connected to your Router’s WiFi you still cannot connect to the internet, you may need to restart your WiFi Router. To restart you home router, disconnect power - then wait at least 30 seconds before restarting. When you router has rebooted (which may take several minutes), force-restart your iPad:

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On an iPad with Face ID: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.

If you have a VPN connection, disable it.

What happens if you connect your iPad to a different Wifi Network (at a friend's house, or in a public place that offers wifi connection)?

If it works, the problem is in your home wifi network. See this support article:--> Recommended settings for Wi-Fi routers and access points - Apple Support

If it doesn't work, try to go to Settings>General>Reset>Reset Nework Settings... bearing in mind that that proceure also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you've used before, but NO other data is affected. When done, restart your ipad.

If the issue stil persists, make an appointment and have your device inspected at an Apple STore or Authorized Service Provider:--> Apple – Location Selector

Regards

Giulio

Being connected to a wifi network doesn't necessarily mean that you have Internet access.

Try to restart your modem router (waiting for its complete autoconfiguration), then reconnect your iPad and test it.

Regards

Giulio