Welcome to Cisco Support Community. We would love to have your feedback.
For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.
What is the best QOS configuration what needs to be applied on a 4500 switchport for Lightweight access point.
I'd recommend you leave switchport QoS at default.
If you are asking about Layer 2 QoS configuration for switch-port then it is global command, which will apply on all switch-ports, not for any specific switch-port.
As far as switch-port mode is concern which in connected to LWAP then yes it is better you keep it in default mode.