Very little, if anything.
Scotland has become a socialist nanny state, full of slackers and gubmint leeches. If they leave the UK, they'll likely fall into bankruptcy in no time flat.
Independence is a long held, romantic idea for the Scots, but leaving now, would be practically suicidal for them.
I hate to say that, as my family's ancient roots are there.
Their oil reserves are partitioned in London.