You should watch tutorial video to know details: https://www.youtube.com/watch?v=pDmuEisA1rc&list=PLZSqbv2i8LOBCosw-vNCjyhmJ5BmrmCqA&index=9
You can go to Files > Upload the image, then copy the name image & paste it to Logo SVG box
Note: You just show one of them, cannot show all.
When scroll down theme, it'll show.
Note: Logo Transparent only active when you enable header transparent, only show on homepage
You can go to Theme settings > Header > Header Layout > Tick on "Header transparent?"
So what is Header transparent? Header transparent is a tool to help the header on the background of the content instead of having to spend a space dedicated to the header.
Hope you success!!