I'm not sure specifically as there could be many novels with that title. It might be about a journey to a fabled or ideal place, perhaps a utopian or longed - for land where characters seek new beginnings, freedom, or the fulfillment of dreams.
Chances are it's not free. Authors and publishers have rights and costs to cover, so it's rare for such novels to be freely available. But you can search on some free eBook platforms just in case.
No, 'The Promised Land' is likely fictional. It could be a creation of the author's imagination to convey certain messages or explore various concepts.
I don't know as I haven't read the 'Promised Land Novel'. But typically, in a novel about a journey to a promised land, there could be a strong - willed leader character who guides the group. There might also be a young and naive character who grows and learns throughout the journey.