If your iPad is disabled, or you have forgotten your iPad passcode, you’ll need to follow this process:
https://support.apple.com/en-gb/HT211078
You’ll need access to either a PC (with iTunes installed) or a Mac (with iTunes or Finder - as appropriate for the installed version of MacOS).
You’ll also need your AppleID and associated password. If these have also been forgotten, they can be recovered here:
https://iforgot.apple.com
To recover your credentials, you’ll need access to one of the following:
- Your primary email address mailbox that corresponds with your AppleID
- Any of the secondary/recovery email addresses that should be configured for your AppleID account
- Any of the trusted telephone numbers (fixed line or Cellular/Mobile) that are associated with your AppleID
Unless you AppleID account has not been fully/correctly configured, or has been seriously neglected, recovery of the AppleID and password should not be difficult.
More information about recovery of your AppleID:
https://support.apple.com/en-us/HT201354
More information about recovery of your AppleID password:
https://support.apple.com/en-us/HT201487
When you recover access to your credentials, you would be well advised to log-in to your AppleID account from a web browser - and verify/update any email addresses and trusted telephone numbers:
https://appleid.apple.com
You perhaps need to be aware that we are seeing regular reports of issues affecting (re)activation of these 9 year old devices. If you are successful in reactivating after restoring your iPad, your problems may not end there; the necessary restore process will have wiped any third-party Apps that may have been previously installed on your iPad
Apple ended update support for iPad2 in September 2016. As such, iPad2 cannot be updated to iOS 10 or later versions as the internal hardware does not meet the minimum technical requirements for new versions of iOS/iPadOS. Most App Developers have also dropped all support for older devices and iOS versions preceding iOS11/12/13 - and have withdrawn older versions of their Apps from the Apple App Store. The majority of Apps previously compatible with older models of iPad are now not available. Whilst your iPad2 is far from being useless, its utility and usefulness will be severely limited.
If Apps that you need to use now have higher minimum iOS-version requirements than your iPad can support, your only option will be to replace your iPad with newer model. Of current models, even the budget priced iPad7 supports current iPadOS13.x (and the soon to be released iPadOS14) and has hardware specifications and capabilities that will vastly outperform your old iPad.
I hope this information and guidance is helpful in both resolving your recovery needs - and in clearly outlining the limitations of your iPad2 and available options.