Derive the ionic equation.

H2SO4+NaOH ---->Na2SO4+H20

I've got 2H+ + OH- --->H20 but i'm not sure if my answer is correct. . .

You have correctly submitted the NET ionic equation. The question calls for the ionic equation:

2H+(aq) + SO4 2-(aq) + 2Na+(aq) + 2OH-(aq) → 2Na+(aq) + SO4 2-(aq) + 2H2O(l)

Balanced NET ionic equation: (with lowest number for the coefficients)
H+(aq) + OH-(aq) → H2O(l)