Depends on its size, the materials used, how many people are building it, etc. Anywhere from a matter of minutes to several hours or more.
According to RAMBAM : Hilchot Sukkah Chapter 4, Section 6. You can go into a Sukkah built on a wagon or a ship even on Yom Tov.
how long does it take to build a asimo
Kathy Kahn has written: 'Let's Build a Sukkah'
how long did it take to build the half moon
how long did it take to build the scottish parliment?
how long did it take to build cabot tower
hs2 will take 15 years to build
how long does it take to build a beam bridge of 2400 sq ft
Yes, these are available, though some assembly is usually required. Another option is to pay a couple of guys to build your sukkah.
How long did it take to build st James cathedral london
it took 3 years
a long time