Yup....at this point....you dont have many options....really only 1....called Restore.
The restore rases the device completely.....restoring it back to factory default...as if it were brand new in the box.
But that REQUIRES you to have iTunes, installed on a seperate computer, that you can connect the iPad to.
iTunes is necessary to be able to restore the iPad.
So if you dont have another computer with iTunes.....then you have to get one....as there is no other way.
The passcode is a security feature, and doesnt do any good if you can easily unlock by a couple button presses on the iPad.....RIGHT!?....So...without a series of steps and hurdles to unlock it.....its useless......RIGHT?!
Glad we both agree on that.....lol
So the ONLY way to regain use of this iPad is to erase it.
Then....and ONLY then....if you took a backup of the ipad BEFORE you lost access to it (forgot passcode) then you can use that backup to RESTORE the iPad.
But if you did nOT have a backup......then all data WILL be lost.....and the ipad will be back to factory default.