Credit Scores

In a previous discussion we considered the impact of selecting alternative uses of an unexpected lump sum receipt of $5,000: to lower debt or invest. My choice was to split it, but putting half of it toward debts and investing the other half. Based on that answer, would the alternative I chose have a positive effect on my credit score? Provide specific rationale for your conclusion, including 2 sources Expanding upon the decision I made to split it (perhaps it wasn't the best choice?) is okay.