Magento – Magento 2 CE on Windows 10 XAMPP

I think it creates an Issue because you are passing cd(change directory) in your command. try to execute without it. And one more thing If you are using Window OS then you need to make sure about slash (forward / or backward ).

Try with below command,

C:\xampp\htdocs\m2fresh\magento-coding-standard\vendor\bin\phpcs C:\xampp\htdocs\m2fresh\app\code\Vendor\Module\ --standard=MEQP2

Please install it using composer your error may be solved by installing this

If you use Composer, you can install PHP_CodeSniffer system-wide with the following command:

composer global require "squizlabs/php_codesniffer=*"

Make sure you have the composer bin dir in your PATH. The default value is ~/.composer/vendor/bin/, but you can check the value that you need to use by running

composer global config bin-dir --absolute.

Or alternatively, include a dependency for squizlabs/php_codesniffer in your composer.json file. For example:

{
    "require-dev": {
        "squizlabs/php_codesniffer": "3.*"
    }
}