You may be able to claim up to 30 points for being under 55 years as part of your expression of interest for the skilled migrant category resident visa.
Your age qualifies for points as follows:
What If I’m Over the Age Limit?
Principal Applicants aged 56 or over will see their application declined.
Note there are other options if you are over the age limit. You might qualify for a temporary or resident visa under other categories, namely Investment or certain retirement categories. You may also have a partner who is under the age limit and could sponsor you.