how do i install current IOS version for 2014 MacBook Pro

Back up your data, check your applications for compatibility, and click on Big Sur. That model isn't capable of Monterey.

For reference, Macs run macOS, not iOS.

(210134)

iOS is the iPhone operating syste, you can not install that on a Mac.

 menu > about this Mac

what version of MacOS are you running now?