Time to nerd out about this.
Scotland in it of itself is not a sovereign nation, as it is apart of The United Kingdom of Great Britain and Northern Ireland. However, Scotland is what is known as a “Constituent Country” meaning it has a distinct culture and peoples, but once again is not a nation (Atleast recognised by the UN) in its own right. It’s also why Scotland can’t join the EU, because even though a majority of the Scottish population wanted to stay in the EU, the rest of the union decided to leave.