Could pure iron from a star make it to Earth? Since iron is a stars waste could a star that goes Super nova eject pure iron to travel across the galaxy?

https://space.stackexchange.com/questions/35101/99-99-pure-iron-meteorite
Sure. Iron is not made in significant quantities in the Big Bang, so 100% of the iron on Earth today was synthesized in a star. There's no other source.

It escapes in many ways:


Supernovae
Mergers between compact stars like white dwarfs and neutron stars
Stellar winds from more ordinary stars


Supernovae are the main source of modern-day iron, with r-process nucleosynthesis during the explosion producing a lot of iron and elements near iron.