Here's a collection of images taken with the Sony RX100 VII at high ISOs to give a sense of how it performs in low-light conditions.
Sony RX100 VII High ISO Sample Images Test & Review
Sony RX100 VII Review - 200mm in your pocket! - Compact Shooter
Sony Cyber-shot DSC-RX100 VII Review
Sony Cyber-shot DSC-RX100 IV Review: Digital Photography Review
Lens Rentals
DxO RX100 VII sensor review: “doesn't quite match the exceptional imaging performance of the previous generation” – sonyalpharumors
The Camera I Almost Threw in the Ocean: Sony RX100 VII Review
Sony Cyber-shot DSC-RX100 VII Review: Digital Photography Review
Sony RX100 VII review - Amateur Photographer
Sony RX100 VII Review
Sony RX100 VII review - Amateur Photographer
Sony RX100 VII review - Amateur Photographer
Sony RX100 VII Sample Images (Tried & Tested)
The Camera I Almost Threw in the Ocean: Sony RX100 VII Review
Sony RX100 VII Review Powerful Compact Camera