Dumpling Stars player help
Dumpling Stars Cash: Official Source Status
The official Roblox game description says that collected Dumplings can be exchanged for Cash and that Cash is earned while offline.
What is verified
The official game page says to collect Dumplings for Cash and mentions offline Cash.
What is not verified
No official Cash cost, reward, multiplier, or drop-rate formula is currently available here.
Safe next step
Check the values displayed in your own game session and review the official page after Saturday updates.