I own an HP Probook 455 G2 and wanted to know if any lighting for my keyboard is integrated. If so, how do I activate it?
No. This would be something to see on the packaging or if you start the laptop
Your laptop's HP data sheet * states that the backlit keyboard is only available as an option, ie: it must have been ordered or offered with it.
How to turn it on is certainly in the laptop user manual.