@jgutierrez5 ...

Hi there.  Are you asking about the "Grades" menu on the left-hand side of your Canvas course?  If that is the case, then you can enable the "Grades" menu following this Guide:

How do I manage Course Navigation links?

Or, if you are asking about individual assignment grades within your Gradebook (Grades) page, that is a different thing.

• How do I post grades for an assignment in the Grad... - Instructure Community - 576
• How do I use posting policies in a course? - Instructure Community - 928

Do either of these help to answer your question?  Please keep us posted here in the Community.