Reinstalling OSX is blocked with unreviewed Apple ID
AppleCare often will provide help for locating a manual that will have the installation steps for free, so you could start there.

If you wanted to DIY - here are some items to check:


https://support.apple.com/en-us/HT204319 - lists the versions for OS shipped with various Mac
https://support.apple.com/en-us/HT201300 - how to identify MacBook pro models


From there, you could see if you need to reorder physical media or if the App Store should let you boot to internet recovery or a recovery HD for reinstallation or if you need to get a bootable installer made on another Mac.


https://apple.stackexchange.com/a/16560/5472
Reinstalling Lion