What OS and version are you using? If you are on a Windows machine and the font is correctly installed, it should be available in the system font list and in AI.
Fonts can be embedded in a Word document.
I'm not sure how to get it out of the document. You can try and rename the .docx to .zip. Then unzip the package andsearch its contents. But the font might not be available that way just as is the case in a PDF.
I think you may need to license it first for a fee: https://www.fonts.com/font/resistenza/modern-love/regular
Do check extensively to see if any offical font websites have a less expensive or free version.
I hope this helps.
Thanks for reaching out. In addition to good information shared above, I'd request checking out this help article as well to know more about fonts & troubleshooting.
Hope it helps.