What do I do if I think My iPad was hacked?

First and foremost, whilst you consider the reasons that you believe your iPad to be hacked, you might be well advised to immediately change your AppleID password - as doing so will keep your account secure:

Change your Apple ID password - Apple Support

What to do after you change your Apple ID or password - Apple Support

Next, if you need assistance, outline here your cause for concern - and the circumstances that gave rise for concern - and any symptoms or unexpected behaviours of your device that you observe.

With the benefit of more information, it may be possible to provide specific advice or guidance.

P7210 wrote:

What do I do if I think My iPad was hacked?

First step would be to provide the symptoms of this “hack” so someone can offer relevant advice.