You have "two steps" in front of you.
The first is to find a way to transfer the files from 3.5" floppy media to the Mac.
The second is to read the old files and get them into a modern app.
I just went to ebay and entered "usb 3.5" floppy drive" into the search box.
I found several devices in the $10-15 range.
I will -guess- that this will work -- have never tried accessing old floppies on a modern Mac, not sure if there are drivers to run the floppy drives in the latest iterations of the OS. Perhaps someone else can help with this.
Another way might be to take the old floppies to a PC that still has a floppy drive, and copy the files to a USB flash drive, then take that to the Mac.
Is there a PC repair shop anywhere nearby that might be able to do this?
Once you have the files ON the Mac, you can try using MS Word to read them.
If Word -won't- read them, don't despair.
Try downloading the latest copy of "LibreOffice" (it's free).
Libre has an amazing set of translators built into it, and can read files from "way way back".
Another trick:
Have the icon for Text Edit in your dock.
Then, drag-n-drop the old Word file onto the Text Edit icon.
It may open the file. You'll have to "clean up" the garbage characters, but the text may "be there".