The afterlife is a concept that Dragon Age hasn't focused on yet, but seems to be inching towards it with its content about Nevarra.
There's probably several views one could validly take, just like with most major concepts of Dragon Age lore, heh.
1)You die, you die. Anything else that might seem like you isn't you, because its a spirit, and people aren't spirits. This is especially true if someone thinks that all spirits are just other forms of demons (basically aka something dangerous and bad to interact with). There is no place you go after death, only magic that perhaps sometimes emulates what a person is/was.
2)There is an afterlife, or a bunch of forms of afterlife. A person can die and become a ghost on Thedas. Or they can enter the 'Void' (either the Fade as we've seen it or more likely another layer of existence on it that is basically 'Hell') where they become one with it.
What is supposedly locked away at this point in time is the Golden City and the Maker's side, so any 'heaven', in the understanding of at least much of the lore, is actually not accessible. Its either a state of 'purgatory' or 'hell' for us.
There doesn't seem to be 'dead souls' on the Yellow/Green Fade realms, only 'spirits' and 'demons'. No dead soul has been seen entering the known Fade.
Basically, we have information on what could be afterlife, but no proof or knowledge. We know there are spirits of the dead, but we don't know the nature of these spirits. We know that entities in the Fade can construct based on memories and ideas and emotions, but we've never seen a 'dead person/soul' pass the Veil. We have legend of the Golden City and the beyond where the Maker now resides, but no proof. We have legend of the Void as a mass that the dead may enter, but we've not been there yet (it seems).
3)It is all one. This is stuff that DAO and DA2 somewhat touches on, but DAI dives more into. There are Thedosian cultures and beliefs that even the many realms we speak of, including Thedas, is all 'living'. Its all part of the same overall composition. When one dies, there's infinite forms they could 'reincarnate' into. We are all spirits, and we are all real. A god can be many things, as can a mortal. So we are all living our afterlife, and dying from our old being, all the time - we only lack perspective in our mortal limited forms.
This last part is the most vaguely put, because I lack exact lore knowledge and I also don't think that Bioware has really went fully into it yet, but I do think its a thing and an important perspective on Dragon Age. Basically a 'does the afterlife even matter?' higher level. More recent content like Jaws of Hakkon explores this a little.
I think we're in for a future full game (whether DA4 or beyond) that cares more about this question of hell/heaven/afterlife.
We currently don't even know is Beyond truly fully = Void. Is the Void a different realm in a way (like Yellow is different from Green Fade), or is it just the 'deepest' part of the Beyond? What is the Beyond? Is it just everything beyond Thedas? There's definitions so far that only present more questions, not answers. So I do expect some more answers later on.
But always always always, one can take the perspective that it's all 'magic', and a person dies when they die, anything else being only emulation of what that person was.
To directly answer: If there is a 'hell' in Dragon Age, its either seen as the wandering of the Beyond (a word that can mean anything beyond physical Thedas), or the Void (seemingly specifically seen as a terrible part/version/form/realm of the Beyond and/or Fade). We have not fully understood what Beyond can mean (IMO) and we have not really fully covered what 'Void' even is, so that's why I think we have more content to come at some point. The only answer we can solidly give so far is: "The dead either are dead, or wander Thedas, or become new things/beings/people/animals on Thedas, or somethingsomething Fade, but as far as we know, they do not go to the Maker (yet)."