Taper
Taper is 2D info ... your egg object takes radius (or size of profile object) from taper's distance on Y axis (X axis represents start/end of your "egg" curve.
Since Taper is controller, scale the "Section" object to 2m (I don't know why ... I would expect 1m like when Geometry > Bevel > Round > Depth), than distance of Taper's control points on Y axis corresponds to radius.
No Taper
BTW for such shape you dont have to use a Taper ... you can just select control point and adjust Radius ...
... and instead of your "Section" you can use already mentioned Geometry > Bevel > Round > Depth
Instead of Subdivision modifier go to Curve Data Properties and increase Resolution Preview.
Oval
To make bottom part oval profile you tan use Lattice modifier or Mesh Deform modifier.