The proper answer is NO.
There are some polishing compounds for glass. There are different ratings in these compounds to have the correct ones. They start with the more coarse and work to a finer one as the screen is polished.
The problem with the CRT glass, is that they are usually coated for anti-glare. Polishing it will remove the coating from its surface. This is going to make the surface look very bad.
There are some glass scratch filler kits available at some of the major auto parts suppliers. These kits are usually used to mask the scratches in the windscreens of the cars. I have no idea of how this will work for a TV monitor screen.
Since you have a CRT monitor, I am sure it has at least a few years on it. Maybe it would be a good time for you to invest in to a good LCD monitor. Once you start with a good quality one, you will never want to go back to a CRT.
Just don't scratch an LCD monitor screen. In this type, the complete screen would have to be replaced to fix the problem.