I've moved this thread to Commercial RPG Maker Discussion. Please be sure to post your threads in the correct forum next time. Thank you.
Yes, you can sell your game as long as certain conditions are met. We have a whole section of the forum dedicated to questions about selling your game
It must be made with an RPG maker or IG maker that you own (so, no games made in pirated makers, no games made in VX Ace Lite).
You may use the RTP resources (those that come with the engine), resources you pay for (from the store, Member+ or that you buy elsewhere) or resources that people provide for free if they say they can be used commercially. You may NOT use resources from someone else's game or that you've ripped from other games.
Those are the basics. If you have any other specific questions, go ahead and list them here, or take a look through some of the other discussions in this forum.