Installing a collection of mods as a free user on Nexus can be very exhausting, especially when dealing with a collection consisting of hundreds of mods.
This script add a button to the mods tab of a collection, allowing you to initiate the download of all the mods with just one click.
The mods are seamlessly transferred to Vortex, and you simply need to wait ;)
However, Vortex will take a while to start the download of every mod, so don't panic if the number of currently downloading mods is not the same as the number of mods in the collection; they will start downloading later. At the end, you will have the same number of mods as in the collection.
After all the mods are installed, I also recommend adding the collection to Vortex. It may contain optional files or other elements that could enhance the overall experience.
A special shout-out to @StrangeT for his script Nexus No Wait, from which I borrowed the method for the download process.