How to install google analytics on wix?

I have followed the instructions but the problem is I don’t know where or how to install the tracking code. No one else like a website designer made this website. And just so you know I’m on wix so when I edit I can just move stuff around on my template. How can I copy and paste it? Where! Please tell me! We“ll be best friends if you give me the answer that I’m looking for! Remember it’s wix.com!!! Please please please help me! Thanks.