Assuming main is a directory inside electron. Also assuming that you have some file called index.js inside main folder where you want to have the path of electron directory.
So, you can do path.join this way:
var mainFolderParentPath = path.join(__dirname, '../');
Your original file location:
C:\\Users\\Blagoh\\Documents\\GitHub\\Screeenshoter\\dist\\electron\\main\\index.js
__dirname will return
C:\\Users\\Blagoh\\Documents\\GitHub\\Screeenshoter\\dist\\electron\\main
and then inside path.join '../', will chop off the main folder from path. So, you will be left off with:
C:\\Users\\Blagoh\\Documents\\GitHub\\Screeenshoter\\dist\\electron