Calculating a number from answers to an audit

I have created a workbook that I store data from my audits, this data is in the form of Y if compliant, N if noncompliant and N/A if not applicable. Where the fun part begins is that each question has a different risk involved. I have used a simple 1 to 5 risk scores and given scores for compliance and non compliance to each score, for example a risk 1 if compliant is 100 points, if non compliant is -100 points, all the N/As are worth 0.

I currently calculate the totals in a different sheet in the work book, but I do this kind of manually, I have calculations to work out the totals and percentages and all that, but I cannot figure out how to get the Ys and Ns to appear in this sheet as 100 or -100. All I do at the moment is bring the Y, N or N/A over with a simple =corresponding cell in sheet 1 then manually change this to the number I require.

Would anyone be able to help me to automate this so that when I put the Y, N or N/A in sheet 1 it automatically puts 100, -100 or 0 into the correct cell in sheet 2.

If you need extra information to help with this I can provide anything.