Using the header.php in my child theme


More for clarification as I'm a little unclear in this area.

I have one or two scripts which I would like to add into my <head> tags on my website.

Doing some reading I see that one way to achieve this is to edit my header.php file and add my scripts in between the <head> tags in here.

However, my child theme (Fixer) has a global-regions/header.php but no header.php on its own and the Fixer one doesn't actually contain any <head> tags for me to put scripts in between.

I know I need to make the changes to my child theme as my parent theme (Upfront) will inevitably get updated and wipe any changes I have made.

How am I best achieving this?

Thank you!