It generally takes streaming services three months from the time your song is streamed to deliver these reports. So, if your release became available in January, you can expect your first report to show in your MusicDigi account at the end of April, Reports for the February sales period will be processed in May, and so on.
Note, Each music store is different and each one has their own payment and report schedule (monthly, quarterly, etc).
For a full overview, please visit this article.