I have the character jumping to a certain distance already done in Maya. I need to know how to script (transform.parent to the Camera) for it to work on time he jumps and hold on the Camera for 2 seconds, and then (reassign it to the original position transform) by the time he returns (jump back).
frame 0 - 20 he jumps to the Camera, like if he’s hold on over the Iphone camera.
stay holding 2 seconds
20 - 30 frame it jumps back to the orginal plane target position.
it will be necessary to make a new animation in unity, beyond that already exists in Maya, to specify the distance from 3D character to ARCamera within the unity?
i need help in create that script…
Ok - I just looked it up and you have four post on the same topic. (Party Foul) 
If you are not liking the answers you get or don’t think your questions has been answered then its ok to post in you Op the phrase bump to sent it back to the top. But creating more of the same topics funk up the search engine. 
It looks as if your question has been answered on the other duplicate post. No one is going to write the script for u so they have pointed you in the direction to learn how to do it yourself. Then when you got a script to fix this is the place to come for error help and suggestions.
If you want someone to create a script for trade or money then the collaboration section is the place to post such a request.
Reference the camera by var or component depending on the way you have your scene setup. Then simply write something like
(eg) transform.parent = camReference.transform; 
If basic scripts are beyond your skill try some tutorials. It never hurts to just play with code examples from the scripting reference in the documentation or other script from projects and tutorials, as its all part of the learning process. 