The Version screen displays information about the current EdgeTX version that is being used:
FW - Firmware name
VERS - Firmware version
DATE - Date firmware was compiled
TIME - Time firmware was compiled
OPTS - Build options that were enabled when compiled.
A complete list of build options can be found here: https://github.com/EdgeTX/edgetx/wiki/Compilation-options
The Modules / RX Version gives you information about the activated RX modules for the currently selected model.