I want to know what i can use or purchase in order to remove scratches or in order to restore the guitar’s original condition. . . thnx

I have a fairly used ovation guitar black. I have a tendency to rattle on when I play and see how it is striker, There are lots of scratches. I would like to review a bit for you to look soo, beaten, is there any way to zero, without setting a new paint job, and there is a way I can to protect my guitar from...