Is value a common noun

Yes, the noun 'value' is a common noun, a Word for any value of any kind.

A proper noun is the name of a specific person, place, thing, or a title; for example:

• Value Ridge Avenue, Henderson, NV or Value Road, Brandon, MS
• Value City Furniture, Inc., Columbus, OH
• America's Best Value Inns, Coral Springs, FL
• "Something Of Value", 1957 movie with Rock Hudson, Dana Wynter