How to smooth a edge (rounding) it I'm trying to learn how to smooth/round a edge of a model, currently I have a very simple case I can't achieve:
I created a sphere and cut it using the bisect tool, thats the result:



Now I'd like to round the top edge of this figure so it gets less shard, more rounded.

How can I achieve this? Tried selecting the top face and using the Bevel tool with no success =(.  (I'm a total beginner with blender) But it was near
You can also use Proportional Editing.
Works well for dense geometry and doesn't require further subdivision.


Scale the top loop
Enable Proportional editing, set Falloff > Sharp
Adjust size as needed