To get literally all modules besides the ones you haven't paid for in VCV Rack 2, head to the plugin page, open the DevTools (cmd+alt+i on Chrome Mac), and in the console, enter the line:
document.querySelectorAll('.library-subscribe').forEach((e)=>e.click())
Then in VCV Rack, click Update all in the Library menu.
Repeat those steps whenever new collections of modules appear.