There are estimated revenue metrics that are provided to streamers on youtube. I don’t know how willing Google is to give that out?
From you tube site.
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estimatedRevenue (core metric) (previously named earnings )
The total estimated net revenue from all Google-sold advertising sources as well as from non-advertising sources for the selected date range and region. This is a core metric and is subject to the Deprecation Policy.
Estimated revenue metrics are subject to month-end adjustment and do not include partner-sold and partner-served advertising.
estimatedAdRevenue (previously named adEarnings )
The total estimated net revenue from all Google-sold advertising sources for the selected date range and region.
Estimated revenue metrics are subject to month-end adjustment and do not include partner-sold and partner-served advertising.
estimatedRedPartnerRevenue (previously named redPartnerRevenue )
The total estimated revenue earned from YouTube Red subscriptions for the selected report dimensions. The metric’s value reflects revenue from both music and non-music content and is subject to month-end adjustment.
Ad performance metrics
grossRevenue
The estimated gross revenue, in USD, from all Google-sold or DoubleClick-partner-sold advertising for the selected date range and region. Gross revenue is subject to month-end adjustment and does not include partner-served advertising. Gross revenue should not be confused with estimated revenue, or net revenue, which factors in your share of ownership and revenue-sharing agreements.
cpm (previously named impressionBasedCpm )
The estimated gross revenue per thousand ad impressions.
adImpressions (previously named impressions )
The number of verified ad impressions served.
monetizedPlaybacks
The number of instances when a viewer played your video and was shown at least one ad impression. A monetized playback is counted if a viewer is shown a preroll ad but quits watching the ad before your video ever starts. The expected estimated error for this figure is ±2.0%.
playbackBasedCpm
The estimated gross revenue per thousand playbacks. "