When will humanity walk on the surface of Venus?

Not in the foreseeable future.

Our current technology is incapable of preserving human life for any significant length of time on the surface of Venus.

- We're talking a few minutes at the very most, probably more like a few seconds, in a mobile protective suit.

Even a vehicle (i.e. people driving, not walking) would last only minutes before the combination of heat, pressure and acidity penetrated the hull and killed those inside.

It might take terraforming technology

- that we do not currently possess

i.e. actually changing (a LOT) the atmospheric environment of Venus

before humans can actually walk on the surface using a space suit and survive the experience.

May be ur grandchildren will do that but with today's technology, the answer is '' hell no''

With the highly acidic atmosphere of Venus, then answer is never.  It has a lot of sulphuric acid in its atmosphere, and this will corrode human skin and flesh to the point we will die. 

Probably never

why do people  ask stupid questions

why , who wants hot feet .

Maybe after somebody invents asbestos boots.  It's kind of warm over there.  And the atmospheric pressure is about 90 times that of earth.

Never. Venus is 900 degrees on the surface. Metal and rocks melt at that temperature. It has 90 times earth's pressure. That will crush any craft. It rains sulfuric acid. That will corrode any electronic instruments. 

As soon as s treaty with the people living on Venus 

Maybe, but it would require a lot of hard work

we'll find out when they do