how can i use this form and put it in my website?...

That's it...

Upon checking the URL provided, I can see your forms are embedded on your site, if you want to embed a same form in another website just get the embedded code an paste it as shown on this guide "Adding a Form to a Web Page".

Also, see this guide "How to clone an existing form from your account?", if you want to clone a existing form. 

Hope this is what you are looking for, if not, please elaborate your questions with more details, so we can understand exactly what you are trying to accomplish.