I success to solve the question and share the way for someone ,who as confuse as me how to Build a Standalone Executable with Azure Kinect Body Tracking in unity.
It is easy to do, Just add the tools under the root directory that contains the .exe of result of Build, The tools is same with that you add in the root directory that contains the Assets folder of Unity Project when setting the body tracking, but only root folder not plugins folder.
Tools detail can take reference from step 3 in this issue : https://github.com/microsoft/Azure-Kinect-Samples/tree/master/body-tracking-samples/sample_unity_bodytracking