Plugin for Adsense

Hey Guys I have adsense account and I have this site:
https://icytutorials.com/

I want to put my adsense ads on my site but for that i need to first verify my site and for that I need to put a ad code on site so i can verify it’s site.

So I am looking for a plugin which I can use to put my ads code on certain pages and post

thnx and if there is no plugin then plz tell me a method to do so.