I am new to play canvas and i am coming from a threejs perspective. I wanted to know if it is possible to use jquery plugin while building a html and css interface for my product configurator ?
Yes, definitely! PlayCanvas renders on a HTML canvas element.
You can use HTML/CSS on top for your UI, check this for more details:
https://developer.playcanvas.com/en/tutorials/htmlcss-ui/
but can i also use jquery and other jquery plugins ?
Yes, sure, just make sure you load them in the correct order, prior using them in your normal game scripts.
Check this:
https://developer.playcanvas.com/en/user-manual/scripting/loading-order/