Bad engine problem

I have a 04 chev epica otherwise known as a suzuki verona with worn valve springs and cylinder 5 needs new rings. How much time would you estimate it would take a mechanic to do that job and what would be a rough cost of parts. Trying to determine if its even worth the job.

it has Engine misfire and low compression on cylinder 5 compression reading are cyl #1 190.5 psi #2 164.5 psi #3 143.5 psi #4 140.5 psi #5 24.5 psi #6 193.5 psi