Hi!

I Have a question.

Can I replace an Objective token iby the ability Advance or Pursue?

As long as your unit lands on the victory space in question, and as long as you have a unit remaining there during the status phase (or whatever its called at the end of the round), then the victory space marker would convert to the sigil of your unit's House, thus giving you the VP (+1 to you / -1 to your opponent).