The rule "women and children first" is not followed any more.
Wikipedia notes that it "has no basis in maritime law."
It was practiced in the 19th and early 20th centuries. It became well-known because of two specific disasters, the HMS Birkenhead in 1852 and the Titanic in 1912. Wikipedia says modern practice is to help the most vulnerable first--those least able to help themselves, which often will be the injured, the elderly, and small children.
The practice was not an indication that men were considered less valuable. It was actually a reflection of a sexist attitude: women were assumed to be fragile, weaker, less able to help themselves, and needing male protection.
In 1912 ships did not carry enough lifeboats to save everybody, so crew members had to decide who could board. Nowadays they do.
You will probably travel by airplane rather than ocean liner. If you travel by ocean liner and it sinks, there will be enough lifeboats. Crew members will not stop men from boarding. Your survival will depends on many chance factors. "Women and children first" will not be one of those factors.