When I embed to Muse, it is only showing a small portion of the form.

How do I get the whole form to appear when I put it in Muse?

Please try embedding the form with the Iframe code: https://www.jotform.com/help/148-Getting-the-form-iFrame-code 

Before you embed the code, paste it in a text editor like WordPad, you will notice two part of codes, only copy and embed the Iframe part in your webpage, example:

You might like to set the scrolling property to "yes", example:

If the form is still cut off, please share the exact URL of the page where it is embedded, so we can check further.