Is there a bus from baiyun airport to shaoguan?

There is no direct buses to Shaoguan from the airport.
You can take the shuttle bus line 1 to reach Civil Aviation Ticket Office, near the local Railway Station and walk to reach local Provincal Bus Station to take a direct bus for Shaoguan.
Or at the Railway Station, you can take a train to Shaoguan in 2h or a little longer.