Minecraft wiki entry for Zombie_Villager, associated text: A former nitwit zombie villager becomes an unemployed villager and can learn a profession after the cure.
Villagers who were unemployed before transforming into a zombie villager might immediately claim a workstation to gain a profession.
Villagers in a range of 16 blocks in a cube surrounding the cured villager also offer a small discount proportional to the number of cured villagers (up to 10).
Saving and reloading the world causes the curing process to finish as soon as the chunk containing the villager is ticked. This does not happen if the player moves out of range, then returns: In that case, the countdown timer pauses until until the player returns.