Getting the value of a corresponding cell to the cell selected

I am looking for a way to get the value in column B if I select a value from column A. For example, If I provide the index of the row containing ABCD from column A, I need to get the value 1000000 but not the row index from column B.

Any help will be appreciated!

If you are passing the index of column A, then use read cell activity and pass the index as “B” + index.tostring so that it will retrieve the required value @isVigneshPrabhu