You could try this build editor:
https://en.uesp.net/wiki/UESPWiki:EsoBuildEditor
And ingame, if you have equipped the items, you can see your spell damage by pressing C.
If you want to see it without pressing C there is an addon like this which shows it on screen in a small movable label (with right click functions). It also shows your spell critical, or weapon dmg and crit.
it reacts on used skills too, which increase/decrease your spll/weapon dmg:
https://www.esoui.com/downloads/info...erTracker.html
Theory crafting addon:
https://www.esoui.com/downloads/info...alculator.html