Since this phrase is a bit fragmented (it reads like a search query for a sound designer or producer), I’ve interpreted it to mean: "What are the best ways to use maximum reverb sound effects?" and "Which plugins/settings achieve the best extreme reverb?"
Top 3 Settings to Achieve Maximum Reverb
The gold standard for hardware pedals used by ambient guitarists. Eventide Blackhole:
The Quest for the Maximum Reverb Sound Effect: Finding Your Sonic Space
Curated Libraries:
Sites like Uppbeat are designed for content creators looking for high-quality, cinematic sound effects.
Immense Scale:
The psychological feeling of being in a space larger than a cathedral—think outer space or deep underwater canyons.