Hello there, @Jefferson Baptist 2021.

 If you want to install QuickBooks on a second computer, you can follow the steps given by my colleague Angelyn_T.  

 Before you begin with the installation process, it's better to consider certain pointers. First, ensure to check the minimum requirements for the particular Windows version you use for speedy installation. Also, prepare the license and product number.

I'm looking forward to hearing from you again. If you have any other QuickBooks questions, please feel free to add a comment below. Keep safe.