Whenever a crash occurs, the report is automatically sent upon the next successful launch of the application.
There shouldn't be a long wait for the crashes to start appearing on your dashboard once they're sent. If you're having trouble getting crashes to show up, one of the following issues may be causing it:
If you're using other crash reporting tools, they may interfere with the Instabug crash reporter, depending on your platform. More details can be found here.
If you're building an iOS application, make sure that the device is not connected to the debugger, otherwise, Xcode will catch the exception and Instabug won't be notified. You should also make sure to have the debug executable disabled.
If you're building a React Native application, make sure to have the application set to release mode, as crashes aren't reported in debug mode.