IF with SUM can I add two [value if false] in nested IF?

That is because if statements are IF ( this condition, then do this, otherwise do that) and then it ends.
If you add another condition it needs to be IF ( this condition, then do this, IF ( second condition, then do this, etc but must come to an end eventually). You ended your second version when you put "POOR" in it so it will not look at the second IF statement.
Also you might want to consider what happens if your value is 17000 or something between 20000 and 15200 as your first one does not account for that.
hope that helps.

Maybe you want something like this
IF(SUM(E7:F7)>=20000,"Good",IF(sum(E7:F7)>=15200,"POOR",IF(SUM(E7:F7)< 15200,"Very Poor","")))
by the way, SUM(E7+F7) is the same as simply E7+F7 (without the SUM part) and if you want sums of individual cells you can do SUM(E7,F7,G7,H7 etc) but you don't need the plus signs in a SUM formula.
The E7:F7 will be everything between E and F (which in this case is only the two columns anyway) but the colon makes it contiguous.
so this SUM(E7,F7,G7,H7) would actually be replaced by this SUM(E7:H7).

Didn't think about using a single IF outcome with multiple IF!

Will try this! Thank you very much!

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