Hi ! Can someone help me that :

1. given a spot rate curve s(t) = (0.561% 0.102%t)e27.068%t + 2.167%,where t is the amount of time in years from 1 January 2019, treating each month as having equal length, and the spot rates are annual nominal rates compounded monthly.How to find the accumulated value in 10 years?

2.Also, given the mean and standard deviation of stock return, how to evaluate the value of stock?