how do I log in my iPad it's in lock mode but asking for apple id I had to make this one up to see if it would work but it didnt

If it's on the activation lock screen you enter the id and password of the account that it's locked to. If you can't remember you id try : If you forgot your Apple ID - Apple Support

Or, and if you were the original purchaser of the iPad (i.e. it wasn’t bought used), you could try going to an Apple Store (make a Genius Bar appointment if you do) or try contacting iTunes Support online (https://www.apple.com/emea/support/itunes/contact.html) and see if they can remove the iPad from the account - they are likely to want to see proof of ownership before they might help e.g. original receipt with the serial number on it