What does The Tome of Divinity reward?

The Tome of Divinity gives Tome of Divinity outright.

Where does The Tome of Divinity 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 21 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
Tome of Divinity	outright	12

What does The Tome of Divinity reward?: The Tome of Divinity gives Tome of Divinity outright.
Where does The Tome of Divinity start?: It was picked up in Stormwind City.
What level is The Tome of Divinity?: Its level has not been recorded yet; it shows once a player accepts it with the addon running.
Is The Tome of Divinity 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