USE can be a verb or a noun and the pronunciation is slightly different.
Look at these examples:
The word ‘USE’ can be a verb ~ “May I use your telephone? I have to call my Mom.”
The verb form has a Z (zee) sound at the end. YOUZ
The word ‘USE’ can also be a noun ~ “Studying English is a great use of your time.”
The noun form has an S (ess) sound at the end. YOUS
Listen and repeat the example sentences