My ipad screen is black but I hear sounds, but can't see anything on the screen

In order to check if it is a temporary screen glitch, try a "forced" restart of your iPad, using these instructions:

• On an iPad with a Home button: Press and hold the top (power) button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On other iPad models: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top (power) button. Only when the Apple logo appears (it might take 20-40 seconds), release that button (ignore all other screens that might appear).

If the issue persists, it might be a screen failure. Contact Apple Support, using this link:--> Get Support

(they have tools to run remote diagnostics)

Regards

Giulio