I second that. Resistivity is complicated. Some models work not too badly, with adjustments and within a limited range. They explain what brakes the electrons: the temperature of the metal and its impurities.
No chance with simple values like electron numbers, molar volume or others.
Who accepted this topic for your project? You need an other one. Or maybe your project can review a dozen of attempted models to show that they are all wrong.
Wikipedia has lists of properties for the elements, like "conductivity of the elements", "molar volume of the elements" and so on. You could choose one or two dozens not-too-exotic metals, and show on graphs that no relationship exists.