This starter template set allows you to play with the Bootstrap 5 components. This template set provides an empty page but add the related dependencies, and supports the RTL.
Get the full documentation on the GitHub page https://github.com/Jahia/bootstrap5
The easiest way to install Bootstrap 5 on your platform using the package.
But you can also install only this template set directly. Please read the dedicated tutorial on https://academy.jahia.com/training-kb/tutorials/administrators/installing-a-module and select the Bootstrap 5 Templates Starter module from the store.