Hey there @Kenano1234567890! How does it look? When using unlit sprites, emission just determines what that pixel is without needing light at all. For god rays, this is usually what you want, as you’d like to control how it looks yourself via the opacity. If you mean you want a “Glow” from emission, this requires Bloom as a post processing technique.
Generally just using the Transluscent Unlit Sprite material is a good test before making a new material for it, just plug in the texture you have (with alpha) and see how it goes.