"C.V." is Latin for "Curriculum Vitae" (life studies).
It is used as an expression for "resume".
A resume is the summary of your work experience.
When you are applying for a job, you send a resume.
The expression "C.V." in normally used in England and Europe.
In North America, we usually say "resume".
This "resume" is a French word borrowed into English, and it is pronounced "REH zu may".
In French, it is spelled with the "accent" character: résumé
We don't have the accent character on U.S. keyboards, so we usually don't use it.
The word "résumé" is not the same as the English verb "to resume" (pronounced "ree ZOOM").
For example: The deliveries resumed after a smoke break.