THIS ARTICLE WILL HELP YOU:
Add Convert Code to Your Website
To add or install the code to your site you need to have a project first. To create a new project head to your dashboard and click on the "Create project icon" (see screenshot below).
NOTE: If you already have an experiment created, then you already have a project and you can skip this step.
NOTE: There is a unique code per project so all the experiments set up in the same project will need the same code. This code never changes per project;
If you already have a project, you can find the code inside the Project Configuration.
Then copy and paste the code, and place it on your website.
The main Convert tracking code needs to be installed in the head section of the page, before any other loaded resource. So, after the <title> tag, is best.