Solution 1:

Node runs JavaScript code and is typical for “enterprise” software like Adobe, Microsoft and others to use in the background when their apps need help to do thing.

In your case, Open Activity Monitor, set to View > All Processes, then search node [in either the Memory or CPU tabs].

Click the found process, then click the i Info icon.

My Mac show that this belongs to Adobe Photoshop, though I don't know exactly what it does.
/Applications/Adobe Photoshop 2020/Adobe Photoshop 2020.app/Contents/MacOS/node
Also note that the PID will be different every time, depending on how many other processes had been run before it.

It also shows it's currently using 0% CPU.
It quits when I quit Photoshop.

You’ll have to check your node to see where it sits on the file system to determine the source of your node process.