That's not Google Adwords, that's Google Adsense.
If you have a website which gets fair enough traffic then the
website owner can evaluate using Google Adsense ads on his/her
website to earn money from Google.
Search for Google Adsense and try to find out how to use Google
Adsense. You should sign in Google Adsense account, creating your
adsense ad banners and getting the code and putting those codes on
your web pages source codes.