It essentially leaves in place the decision of the Federal Appeals Court finding that Trump acted inconsistent with rule of law and stayed his changes.
The plaintiff argument (petition for writ of certiorari) could not convince four judges that the case had merit.
Having lived in Berkeley for two years San Fran is inappropriate and use the proper noun, San Francisco. The first Taco Bell I went to was in Berkeley and most likely the first in the whole wide world. The first McDonalds I went to was at Carbondale, Illinois. The first KFC I went to was in Kentucky which predates both by years.
Now this would be an opportunity for you to substantiate your seemingly unreasonable assertion with some evidence, such as a document explaining the SCOTUS case process and why merit is irrelevant.
From what I have read, "merit" is an extremely important part of the process. You might be interested in reading "the nine" by your beloved Jeffrey Toobin, or Sandra Day O'Connor's Majesty of the Law to expand your understanding of the writ process.