How to boost a 758 credit score?

I have not had any debt in years, and my credit score is static at 758. Would a personal loan now boost my score within a year in a tangible way? How much could it go up? +2 to 760, or +10 to 768? And would a 760 or 768 qualify me for a lower rate on, say, a $100k construction loan versus 758?