Your package page (the detail view for a specific package) is the live dashboard for the campaign. Here's what you're looking at.
Approval rate
The headline number. What percentage of curators who responded decided to approve your song? Along with that, you'll see the raw counts: how many approved, how many declined, and how many haven't responded yet.
Credits used vs remaining
Broken out per type (playlist, blog, Meta). You can see how many credits of each type have been spent and how many are left to cycle through.
Meta ad reach
If your package includes Meta credits, you'll see how many people have seen your ad. This is the same Meta impressions number you'd see on the ad itself, just surfaced here for quick reference.
Full submission breakdown
For the per-curator detail (who's been sent your song, individual feedback, playlist placements), click through to the full results page for that song. You'll see every submission with its current state and any feedback the curator left.
Want ad-level detail?
The Meta reach number here is a summary. For the per-audience breakdown (age, gender, country) and other ad metrics, open the ad itself. See the Ads "What stats will I see?" article for the full breakdown.