First of all, note that it's spelled "excel." I don't like to
correct spelling errors here, but I don't want you looking for
the wrong thing.
I see that others have told you how to look for it, but I'll
supply a more general answer. Did you install Excel or Microsoft
Office? Did you buy a computer that was advertised to come with
Office preinstalled?
If the answer to each question above is "no," you don't have it.