I agree with Porrohman, absolutely correct. Scotland already complies with ALL EU requirements etc. The EU will not reject an existing enthusiastic member.
It isn't Scotland that's the member of the EU, it's the UK. There are many EU requirements which are dealt with by the UK Government on behalf of the constituent governments of the UK, and not the individual nations
I hear Mr Salmon wants to set up passport control at Hadrian's Wall
Hopefully any passport control will be at the Scottish border - takes long enough to get to work as it is!