@Clarkita I suggest you clarify what they mean by visa 190 ka agad. Possible naman talaga for an offshore applicant to get a PR visa if that person meets certain criteria and that has happened to many people in this forum.
Since you are a PT and the agent mentioned a specific visa, I think you should try to clarify these 2 points -
Allied health degree holders from the Philippines usually need to take an exam or a conversion course before they are able to get a positive skills assessment. A positive skills assessment is needed for all skilled visa applications (189, 190, 491). Is the agent assuming that you already have a positive skills assessment?
190 is a state sponsored visa and right now, most states are only sponsoring applicants who are already living and working in their state OR applicants already in Australia who have a job offer for their state. There might be some states who are sponsoring offshore applicants ATM, but I suggest you ask the agent which state is doing this now.
Last point lang. You can't just apply for a skilled immigrant visa. You have to be invited by DHA (189) or sponsored by a state (190, 491). An agent cannot guarantee sponsorship or an invitation. So you may want to clarify as well yung sabi na 190 ka agad.