A survey by Aldermore Bank puts new Scottish business creation up from 275 000 in 2005 to 383 000 in 2015. They also state that between 2007 and 2017, entirely under SNP leadership, more businesses were created than in the 1990s. Bear in mind that this was despite the dramatic slump in the economy in 2008 and for a few years after due to the banking crisis.
This is another indicator from the many reported here of the good health of the Scottish economy. See, for example:
Clearly government cannot claim all the credit for such growth but the Scottish Government did commit £500 million in support for business investment in 2016. Had the number shrunk, we can be sure Anas Sarwar would find a way to blame the SNP.