S-1 SLC too see elevatio

Hi Folks,

I am wondering how can I see the elevation of the pixel? What does this elevation mean?
Can see elevation also in the sea, when I click on the pixel? What terrain correction should I apply in order to get MSL or LAT elevation?

This refers to elevation angle of the antenna, and also please read the incidence angle meaning, Please take a look at the following link

Source: https://sentinel.esa.int/web/sentinel/user-guides/sentinel-1-sar/overview

Also have a look here,

Source: https://directory.eoportal.org/web/eoportal/satellite-missions/c-missions/copernicus-sentinel-1