What does The Symbol of Life reward?

The Symbol of Life gives Symbol of Life outright.

Where does The Symbol of Life start?

It was picked up in Stormwind City.

Its level has not been recorded yet; it shows once a player accepts it with the addon running.

Yes. Its quest id is not in Classic Era, so it is part of what Forever adds.

World of Warcraft: Forever · quest · new since Classic Era

A quest in World of Warcraft: Forever in Stormwind City and turned in to Duthorian Rall. Recorded by 9 players running the addon.

Level, giver, pay and objectives show once a player with the addon accepts the quest.

Item	Given	Item level	Vendor sell
Symbol of Life	outright	12

What does The Symbol of Life reward?: The Symbol of Life gives Symbol of Life outright.
Where does The Symbol of Life start?: It was picked up in Stormwind City.
What level is The Symbol of Life?: Its level has not been recorded yet; it shows once a player accepts it with the addon running.
Is The Symbol of Life new in WoW Forever?: Yes. Its quest id is not in Classic Era, so it is part of what Forever adds.

Source: what players running the addon saw in the quest windows; the quest text itself stays in the game. Every quest seen · Stormwind City