A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Select H2:H6 or however far down you want. H2 should be the active cell in the selection.
On the Home tab of the ribbon, click Conditional Formatting > New Rule...
Select 'Use a formula to determine which cells to format'.
Enter the formula
=AND($E2<>"", $E2<TODAY()-90)
Click Format...
Activate the Fill tab.
Select yellow as fill color.
Click OK, then click OK again.
Repeat these steps, but with the formula
=AND($E2<>"", $E2<TODAY()-180)
and red as fill color.
Finally, repeat them with
=$H2<>""
and green as fill color.