You can check the Performance tab in the Dashboard of your Hummingbot Miners page. At the moment, this shows the past 1 hour, day, and week. This would normally help you monitor your PnL. Our team is still looking to see some improvements on this part in the future.
Also, you can use our Colab Notebook to calculate your PnL as well, this pulls data directly from Binance
For more details about Performance, you can check this here