Stem visualizes earnings and performance data (in USD) on the Dashboard and Content Detail pages on the 5th of each month by the end of the day. If you've been paid, Stem will visualize details about your payments on the Payments page by the 15th of each month.
Please note that Stem receives reports from platform partners (e.g. Spotify, Apple Music) every 30-60 days. For example, if you release content in May, Stem will begin to receive performance reports for it around the end of June and will visualize data in July.