Click inside a footnote and press Ctrl+Q. Does that get rid of the bullet? Repeat for additional footnote text paragraphs.

Note that doing so won't take care of the footnote separator, which seems to have a bullet as well, according to your screen shot. For the footnote separator, do the following: Switch to Draft view (on the View tab, click Draft). Go to the References tab and click Show Notes, which will display the footnote pane. In the drop down, choose the Footnote Separator. Click in the separator and (re-)apply Normal style by pressing Ctrl+Shift+N.

__________________
Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional