Help need

Help how to surface modelling a model from 2d scketches or contour.
Hi Guys! Can you help me how to create a model of this item by using this drawings? I generated it with AI it is good, but there are a millions of polygons, and the whole surface is only one surface. Thank you!

Help how to surface modelling a model from 2d scketches or contour.
Hi Guys! Can you help me how to create a model of this item by using this drawings? I generated it with AI it is good, but there are a millions of polygons, and the whole surface is only one surface. Thank you!