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 Camera Review - Performance
Sony RX100 VII Underwater Camera Review - Underwater Photography - Backscatter
RX100 in low light - Korean High ISO samples: Sony Cyber-shot Talk Forum: Digital Photography Review
DxO RX100 VII sensor review: “doesn't quite match the exceptional imaging performance of the previous generation” – sonyalpharumors
Sony RX100 V Sample Photos And Video
Sony RX100 VII Review
The Camera I Almost Threw in the Ocean: Sony RX100 VII Review
Sony RX100 VII High ISO Sample Images Test & Review
Sony RX100 VII Review - Underwater Photography Guide
Sony RX100 VII High ISO Sample Images Test & Review
Sony RX100 VII review - detailed, hands-on, not sponsored
Sony RX100 VII Review - The Ultimate Run And Gun Camera –
Sony RX100 VII Compact Camera Review: A Pocket Rocket with Some Serious Zoom