The command to set the OpenCV environment variable and add it to the systems path is inaccurate and it's confusing for a noob like me :

This image is from : https://docs.opencv.org/4.5.5/d3/d52/tutorial_windows_install.html#tutorial_windows_install_path

Instead, I used this command and it worked fine :
setx OPENCV_DIR "[opencv_path]\build\x64\vc14"
Notice the use of < " " >.

• I report the issue, it's not a question