Once you create environment variables, you can't see the value (only the last four characters).
It'd be great if you can set a future visibility: you can specify whether you want to be able to check the value of env ver in the future again or not (like the current setting).
With this, you can create an environment variable which you can check the value in the future, without having to store the value on your end.
For your reference, Bitrise offers this feature.