1) create a sql database. do you have mysql installed, so you can easily create one?
2) access the database from php. try to insert some stupid data just to make sure you can do it
3) google for radio button and make a simple formular, make a POST request and make sure the php file that receives the request puts the answer of the radio buttons into sql
4) use JS for whatever you want to do with JS. i don't see any reason to use it, except if you want to use the keyboard keys to chose between #yes #no #average
5) make sure everything is save against sql injections, e.a.
if you want that we help you at step one... try to explain what server you use and how you access the files