This forum is for talking about all kinds of Peavey guitar amplifiers.
If I can see a distinct break in a copper trace, I patch it by baring the copper, and soldering a small piece of bare wire across the break. If I cannot spot the actual break, then I just run a piece of insulated wire from point A to point B, whatever it takes to bypass the break.
Why do you want to remove the glue? Many manufacturers goop their boards to hold larger components still. This helps prevent broken solder. Yours looks like hot-melt glue, the other likely type is silicone sealer which is rubbery.