Google generated $76 billion in US ad revenue in 2023 [1]. Google had 274 million unique visitors in the US as of February 2023 [2].
To estimate the revenue per user, we can divide the 2023 US ad revenue by the 2023 number of users: $76 billion / 274 million = $277 revenue per user in the US.
The average Google user searches three or four times per day or about 100 times per month. [1]
According to DuckDuckGo's data, their monthly average is about 30 searches per person, or one per day on average. [2]
[1] Fit Small Business - Google Search Statistics
[2] DuckDuckGo - How Many People Use DuckDuckGo?