What if you got an iPad that is locked from someone that is now deceased, how do I unlock it?

I am sorry for you loss.

But, It is clear that you will not be able to recover the needed credentials. Nevertheless, Apple support will help you with your problem if you have a court order instructing the Company to assist in the provision of access to a decedent’s information from the deceased person's accounts. (See How to request access to a deceased family member's Apple accounts https://support.apple.com/en-us/HT208510.) You can use the support options below to contact Apple if you have or get a court order. Alternatively, if an Apple Store is open in your area, then you can go there to deal with your problem. In this case, you can make a genius-bar appointment (https://www.apple.com/retail/geniusbar/) if you want.

Get a call from Apple support to help solve your problem using this

link https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362

Apple ID Support https://support.apple.com/apple-id

Apple Support Twitter https://twitter.com/AppleSupport

Apple ID account security for country-specific andregion-specific help https://support.apple.com/en-us/HT204169

Get Support: We’re here to help https://getsupport.apple.com/. Go through the options to find the best support option.

I would recommend following the instructions in this support article (How to request access to a deceased family member's Apple accounts - Apple Support)

I hope this helps

-Person