My iPad bending but still work can you advise what I can do ?

You can have Apple inspect it to see if it is viewed as a defect although honestly they may say it’s user damage. Otherwise there isn’t much you can do as it appears to be a cosmetic issue. Anything else happening? Getting extremely hot or anything?

You should make an appointment at the nearest Apple Store for an evaluation and explanation of your options...

Apple Store - Find a Store - Apple