If you go to Mars you can land and explored all possibilities inherent to being on the ground (including, most importantly, using the water ice from the south pole).
Venus on the other hand is a ball of rock wrapped in a dense and hot acid soup: you’de have to beat way worse technical challenges for, maybe, being able to locally extract from the athmosphere chemical compounds which you can just as easilly make on Earth (it’s mostly CO2 and sulfuric acid, though apparently it has 20 ppm of water).
It would make more sense to just have a moon base.