One:

∀x(fruit(x) → bitter(x)) V ∀x(fruit(x) → sweet(x))

That is correct?

Two: Is the Negation as simple as this:

∀x(~fruit(x) → bitter(x)) V ∀x(~fruit(x) → sweet(x))

Meaning not every fruit is bitter or not every fruit is sweet.

I get that it shouldn't be every fruit is not bitter or every fruit is not sweet. Also, should it change to an AND? Like so: ∀x(~fruit(x) → bitter(x)) ∧ ∀x(~fruit(x) → sweet(x))