How we can monitor VTEX Store front and check exception logs?

Hi,

Where and how we can check exception logs? For example, a promotion code not working for the customer or customer is getting some error while placing the order or some code failed in the back-end. Is there any functionality for monitoring, troubleshooting and alerts are available in VTEX?

Unfortunately, there is nothing quite like what you are asking for.
What can be followed are just the links:
https://status.vtex.com
https://healthcheck.vtex.com

Infelizmente, não existe nada parecido com o que você está pedindo.
O que pode ser acompanhado são apenas os links:
https://status.vtex.com
https://healthcheck.vtex.com