qgis - Find nearest road distance between two points for over 1000 points

I'm extremely new to QGIS and am learning the material on my own.

I have two CSV files with latitudes and longitudes, one has school address information and the other has fast food restaurant address information.

I would like to find the distances between the two and the distances between the two points. (If that makes sense)I don't want to use the Hub Line process since I need road distances and PGRouting isn't working for me for some reason.

I'm not sure even after downloading all the information, it will not open up.