Im using a Shure sm57, focusrite 2i2 interface and recording my marshall jvm 410h. i cant seem to make my tracks loud in reaper without clipping. When I compare them to songs on my computer, my recordings are more quiet. Whats going on?
You shouldn't expect them to be the same volume. Making a song involves a lot more than just recording the instruments. Most of the songs we listen to are mixed and mastered (this is usually where the volume gets increased) professionally. Also, it's almost always a good idea to avoid clipping. Stay just below, and the level can be adjusted later.

I would suggest looking up mixing and mastering tutorials on YouTube to get you started. Recording something that is loud doesn't automatically make the end product loud.