Deleted find my ipad

Do you mean the Find My app is gone from your iPad? It can’t be deleted, so go to the App Library (the last page of the Home screen) and drag it to where you want it.

Or do you mean your iPad no longer appears in Find My? If it appears but says Offline that means it doesn’t have a network connection. If it doesn’t appear at all that means that Find My was turned off on the iPad (which can only be done using your Apple ID and password).

Start here:

Locate a device in Find My on iPad - Apple Support

Here is Apple’s advice for lost or stolen devices:

If your iPhone, iPad or iPod touch is lost or stolen – Apple Support

Use the Find My app to locate a lost or stolen device – Apple Support

If the Find My iPad feature was enabled prior to it being “misplaced”, then if active, you would stand a good chance of locating it. 

However, if the feature was not activated prior to being misplaced - or the iPad has been inactive or without a network connection for more than 24 hours, the last known location will not be available - and the opportunity to use technical means to recover or manage the iPad may have been lost.

In addition to accessing Apple's Find My service from an Apple device, you can also access the service using a web browser from any computer:

https://icloud.com/find

More details can be found here:

Sign in to Find Devices on iCloud.com – Apple Support