VBA-Highlight standard deviation in excel

Welcome to the Forum Ajay_2510!

There is no way to answer this without knowing what your table looks like, what data you want to highlight, and how to determine the standard deviation. Please see "HOW TO ATTACH YOUR SAMPLE WORKBOOK" in the yellow banner at the top of the page and attach your file. When you provide the file show at least one example of the result you want.

Also a single value cannot cross a standard deviation. Do you mean if a value is more than one standard deviation away from the mean?