Hi Wil S.
Welcome to the forum and all the best fot the new year. As Jonno 65 mentioned above if the scratches are not too bad then a simple tough-up could be all that's required to restore the model. You don't say how the scratches occured, but most model acrylic paints are not known for there wear-&-tear if the model is being subjected to some serious play-time, even coating with a matt varnish won't really help much. Enamel paints seem to have better durablity but then you have the problem of having to use white spirit or turps. Primming the model before painting can help when using acrylic paints to help adhesion, but then again it's another step to do when painting, Tamiya's primmers are very good, but be warned they are Very Very smelly so don't use indoors, use the garden shed if possible.
If your scratches have damaged the decals then you have a problem of getting fresh decals. Maybe Airfix can help but at a cost. Or you can try some of the after market decal sheets.
If the model is very badly scratched it might be better to completely repaint the model. If it's painted with acrylic paints then this is easily removed with meths and warm soapy water. Or it might be better buy a new kit and completely remake your model, All part of the learning curve. What-ever you do the best of luck and I hope this helps. Looking forward the hearing about your adventures and seeing the results.
Remember we do mthis for fun John the Pom