It's possible the defendant simply doesn't have the money to give you. At that point, you can research whether the defendant owns any real estate and put a lien against that real estate. When the defendant sells the property, he will have to pay you out of the proceeds.
If the defendant owns any valuables like a car or store inventory, you may be able to get the sheriff's department to seize those valuables and auction them off to satisfy your judgment. You may also be able to garnish the defendant's wages.
Try free measures like complaining to the Better Business Bureau and to government watchdogs before suing in small claims court.
Learn the statute of limitations for your type of dispute in your jurisdiction. If you want to sue, be sure you do it before the deadline.
Get an accurate name and address for the company or person you are suing, otherwise your case will be dismissed.
Carefully prepare for your day in court. It's your only chance, so get organized and prepare to fight.
Follow all the steps allowed in your jurisdiction for collecting your judgment.