Since there are metallic and semiconducting nanotubes, that is not that simple. Maybe this is a good starting point:

Article Electronic Transport through Carbon Nanotubes: Effects of St...

@Md Saleh Akram Bhuiyan,

In term of singled walled carbon nanotubes (SWCNTs), the highest conductivity so far is achieved at approximately 8000 S/cm. The conductivity of MWCNT thin films are normally is very low due to the nature of their electron distribution and transport. The highest conductivity of polystyrene or PEDOT thin films can be achieved at 5000 S/cm by doping.

There are some early work around 2010. The last decade work mainly focuses on the applications of such materials.

You could find some of references via the following link

https://www.academia.edu/29777972/Spin-and_Spray-Deposited_Single-Walled_Carbon-Nanotube_Electrodes_for_Organic_Solar_Cells

A carbon nanotube conducts power when you connect various voltages to each end, much the same as a wire. Carbon nanotubes can conduct power superior to metals. At the point when electrons travel through metal, there is some resistance from their motion. This obstruction happens when electrons catch metal atoms

Ever since the discovery of carbon nanotubes (CNTs, by Iijima in 1991), there have been extensive research efforts on their extraordinary physical, chemical, mechanical, optical, thermal, and electronic properties.

However, only, quasi-aligned Carbon Nanotubes can conduct (in a reduced, 1 or 2-Dimension) power superior to metals in the direction of alignment, without breaking all the (percolation threshold) conductive path(s).