Here are two ways you can find the Airplay (Radio) Charts.
Option 1: "Charts" section of the Market Intelligence
On the left side of your screen, go to "Charts" in Market Intelligence.
Select "Airplay" in the chart dropdown.
You can find the artist/song if it appears on a weekly or daily Top 400 chart.
Option 2: Artist's or Song's profile
When an artist appears on the airplay charts, you can have a condensed view of the airplay charts by checking the "charts" section in the artist's or song's profile and clicking on the Soundcharts logo in the dropdown.
Airplay Charts in artist's profile
Airplay Charts in song's profile
(Want to know more about charts? Read articles: How do the charts work on Soundcharts? / How often are charts and playlists updated?)