This is a superscription that tells about the psalm. Some scholars say that this is part of the scripture and some say that it is not. (See "What are Superscriptions in Psalms" in [Introduction to Psalms](../front/intro.md).)
The writer uses this question to focus attention on the source of his help. This rhetorical question can be translated as a statement. Alternate translation: "I will tell you from where my help comes." (See: [[rc://en/ta/man/jit/figs-rquestion]])