Without Excuse!

How does someone get saved?
How does that apply to those who have never heard a gospel presentation?

Romans 1:20 - "For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:"

https://www.gotquestions.org/invisible-attributes-clearly-seen.html

https://www.gotquestions.org/people-are-without-excuse.html