What's "made it" mean, and is it a common expression?

Native speaker’s answer
Rebecca
"Made it" means succeeded or arrived at something! It's a very common expression. You can use it when you've accomplished something difficult, when you're successful, or when you reach somewhere. Ex: Mark Zuckerberg has made it big time. => he's very successful Ex: We made it to the top of the mountain, finally. => arrived Ex: She kept auditioning, and, eventually, she made it.