What is the chavacano de zamboanga translation of where are you?

The Chavacano de Zamboanga translation for "Where are you?" is:

¿Dónde está usted?

This is the formal way to ask. For a more informal way, you could say:

¿Dónde está? (Where are you?)

Or

¿Dónde ka? (Where are you?)

Remember that Chavacano is a creole language with influences from Spanish, Tagalog, and other languages.