I have kidney amyloidosis. if its primary, what would be the life expectancy? if its secondary to other diseases, what would it be then? or overall in average whats the life expectancy of someone with kidney amyloidosis?

Primary amyloidosis (AL amyloidosis) has much poorer prognosis, especially with cardiac involvement. One study reported a median survival of less than one year in a group of patients with AL amyloidosis. All patients I took care died in the first year. Prognosis is very poor with kidney amyloidosis which requires dialysis; of course better if you have secondary type + kidney transplant. Sorry!