For a while, Dell was a privately shared company, which meant that the general public could not purchase shares of the stock that was available. However, in the year 2019, Dell finally became a publicly shared company. It operated for six years as a private business before it opened its doors to allow the general public to become stockholders.
If you are interested in purchasing shares of Dell, you can check online
https://www.engadget.com/2018/12/28/dell-public-company-new-york-stock-exchange Dell is publicly traded as of December 2018 after six years as a private business.