Essentially, it's the same question you've already asked here.
If you see ST-LINK in the Device Manager, at least the connection from the UART pins of the STM32G431RB via the ST-LINK to the host computer is OK.
The fact that you don't see anything on the terminal is simply because you are not sending anything from the target (the STM32G431RB). To get familiar with how to set this up, you should read e.g. this or that thread where it has already been discussed.
Hope that helps?
Regards
/Peter
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