There are several different types of LED tape. Most common types are 12 volt or 24 volt, which will both have a small transformer to operate them. If this is what you have, a wallbox dimmer, like Lutron, will almost certainly not work. If your tape is just white, then it's likely not dimmable at all. If it's a color-changing tape, then there could be a small remote control provided by Westek that will also have a dimmer button on it. Look for part number LTAPEREMW-T for this remote.
If your tape is 120 volt, then the manufacturer will have to tell you which dimmer manufacturer's make & specific model will work. Good luck with that!
CD