I just deleted my iPad in iTunes, what’s the next step to reactivate

That would largely depend upon the problem…

Is the iPad “disabled” or Activation Locked - or perhaps reporting that it cannot be activated? These are all different issues, each with their own solutions or procedures. When you describe deleting your iPad from iTunes, what, precisely, have you actually attempted?

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As is, your post is extremely vague. If you can better describe both the issue that you are attempting to resolve - and the current state of the iPad - then it may be possible to provide appropriate advice and/or guidance.