How to rest a iPad

If the screen you are looking at mentions Activation Lock and

asks for an AppleID and passcode you do not know,

return the iPad to the seller for assistance or a refund.

Here is what Apple has to say about Activation Lock:

https://support.apple.com/en-us/HT201365

Without the Apple ID and Password of the original owner you will never be able to use the device. You have encountered the Activation Lock a theft prevention feature. Return for your money back if possible. If not recycle responsibly by taking it to an Apple Store when they reopen.

Here's what you can do to Restore your iPhone, iPad, or iPod to factory settings