when the supreme court makes a law is there a way to appeal their decision?
The short answer is no. However, you need to clarify your question.
In the US?
#1 - Courts are there to interpret laws, not to make them. Legislatures make laws.
#2 - Which supreme court? That of one of the states? The US Supreme Court? That of another country?
http://en.wikipedia.org/wiki/Supreme_court