Sorry to hear about your issue :(
How long have you been facing this issue?
Let's try a reset first. Press and hold the power button and the home button together until you see an apple logo.
Let's see if that resolves your issue.
The big round button at the bottom of the iPad is the home button (the only button on the face of the iPad).
Is it connected to power? Do you see a lightning bolt next to the battery icon at the top right corner?
Then probably it is not charging. Have you tried with a different cord?
The problem could be with the cord or with the iPad itself. If it is with the iPad, we may need to restore the iPad (which will delete all contents in it) or repair the iPad if restore doesn't work.
So it is better to take it to an Apple Store as they can try with a different cord and also give you repair options if iPad is faulty.
Let's hope for the best :)