Match number in column G and return column B results to new sheet

What I am trying:

When I type a number in column G (Project activities sheet) it must show column B in Status sheet column A

I have tried using :=IF('Project Activities'!H5<=1,'Project Activities'!C5)

But when I pull this formula down I am getting all of them and would only like to get the ones if their is a number in line G (Project activities sheet)

Thanks