This depends on how bad the scratch really is. There used to be cleaners available that would sometimes help, but most of these have gone away (much like actual "record stores") since the advent of digital music.
Another tip you could try (after cleaning he record) is to slightly increase the amount of weight on the stylus. Tone arms usually have an adjustment wheel on the back end of the arm. Be aware that too much tone arm weight may cause wear ad damage to your record.