Count if function for audit checklist

Example 1.xlsx
I'm trying to build a QC checklist that scores each correct or incorrect line item.
I can get a coulple of criteria covered, but I can't get it to look for a value in all three columns and return the score i need based on the box checked. Each line item should only have one item selected and some line items may carry more weight than others.

Looking to return a value of 0 if B3=x, C3= "", N3=""
Looking to return a value of 5 if B3="", C3="x", N3=""
Looking to return a value of 0 if B3="", C3= "", N3="x"
In some instances an "x" in c may only be worth 1.

Please see my attachment and let me know if you have any questions.
Thank you in advance for the help

Thank you for the response. I can get this far and I'm sorry if my question wasn't clearer.
=IF(AND(B3="",C3="x",D3=""),5,0) If I have this, how do I add to it to potentially include an x in either column B or C. I'd like the formula to search all three columns and return a 1 if there is an x in B3 or D3 and only return a 5 if there is an x in C3. I'm trying to scan three columns and return two different values depending on the location of the x. I tried to combine if formulas, but kept getting an error.