How can I change the font style of my heading field

Hi,

In the text box, I am writing in it and will not let me import my own font to type, but the rest of the form seems fine.

If you are referring to the heading text, the font style can be changed via the advanced designer.  While editing the form, click on the paint brush looking button, then click the "Advanced Designer" button:

From that menu, click on the heading, then select the font style you'd like to apply.