First of all - please stop posting pictures of code. Instead post it as text formatted as code using the preformatted text button ( </> ). Simply place the cursor on an empty line, vclick the button and paste your code.
Please stop posting pictures of code or error messages. Instead post it as text formatted as code using the preformatted text button ( </> ). Simply place the cursor on an empty line, vclick the button and paste your code.
Did you add the path to nodejs to the path environment variable during the installation? Did you restart your PowerShell console?
Just to try it I installed nodejs and ran node -v and just got the version information as expected.