not ipod or iphone..i mean ipad with retina

Apple does not repair iPads, but will replace the entire iPad for a flat fee. If you have AppleCare+ on the iPad, the cost will be relatively minimal; $49 in the US. Otherwise, see the Repair Pricing section here:

http://www.apple.com/support/ipad/service/faq/

There are independent iPad repair services that may be able to replace the screen for less. Do a web search for "ipad repair". You can also look for parts and instructions and do the repair yourself. Note, though, that if you elect to have the iPad serviced by an unauthorized shop or perform your own repair, you will get no further support from Apple.

For future questions, the iPad forum can be found here:

https://discussions.apple.com/community/ipad/using_ipad

Regards.