Disney may put in a claim for the amount still due to your bankruptcy lawyer or administrator.
Disney may or may not get paid the full amount, depending on whether your assets (cash, property, etc.) were enough to generate enough funds to pay all of the claims filed..
Next time when you buy something like an annual pass from Disney, they may or may not check your past credit history with them.
You may or may not get to buy another AP on credit from Disney.
My gut feeling is that Disney would let you book resort rooms and meals, etc. with no regard to your past bankruptcy provided you make payments in the normal fashion. Tickets, gifts, etc. would have to be paid for with cash, or with a credit card if you succeeded in getting another of those.
If you had not used the AP by the time you filed for bankruptcy, Disney could revoke the AP but would then have to refund what you paid so far and there would be no claim or debt. Bankruptcy is not grounds for banning you from the parks.