US Russ 2000 is just a number that lets you track performance of the instruments comprising the index, so you can't invest in it directly. But you can buy US Russ 2000 futures or funds or invest in its components.
The lowest ever quote of US Russ 2000 is 338.242 USD. It was reached on Mar 31, 2003.
US Russ 2000 reached its highest quote on Nov 8, 2021 — 2463.802 USD.