Youform provides an easy way to embed forms in your website. You can use the following options.
First go to the Share tab of your form:
Then select the type of embed you would like to have.
Out of the box, Youform provides three types of embed: in-line, pop-up, and full-page. You can select your embed style and then copy the code accordingly. There are instructions already written in that page.
If you want to embed Youform in other form builders then you can follow the respective guides: