If I just want to trigger LiverOrder Model again withing below event, How I can do that? I want to Update my order Summary?

Application.on('before:LiveOrder.get', function afterLiveOrderGet(Model, responseData) {
		??
	});

LiveOrder should have an event listener, so by setting something in the model without it being silenced should update your order summary.

could you please give me on example

var cart = LiveOrder.getInstance();

cart.set('<anything>', 'abc');