How import opencv on c++ project with vs code on kali linux?

i can’t find the opencv installation directory. i used pip. please help me.

pip only installs python wrappers, no c++ code, headers or
you’ll have to build from gh src, using cmake.

also, be aware, that kali does not come with any desktop gui (qt or gtk) dev libs, or with anything video related (ffmpeg, gstreamer), so you’ll have to install a lot of dev libs, if you need that