I would also like to create a figure legend in Word, so need a font that has symbols similar to those used in making graphs.

We don't provide a font with the symbols you need to make a figure legend, but found this Delta Symbol font that will let you do most of what you want. This appears to be a freely available font. Download, unzip, and drag into the Fonts folder within the Windows folder.

Another approach is to create a bogus graph in Prism with a "legend" that has a symbol but no text. Then copy and paste onto an empty layout, then from there into Word.