Hello @johocen168!
I believe you are trying to translate the “Checkout” text of the mini cart section. Is that correct?
It should be automatically translated as per the translation. If it is not working as expected; clear your cart, and try again.
If this doesn’t help, then this particular phrase can be edited using the translation plugins like Loco Translate.
With Loco translate, you can create a custom language file for your site’s language, search for the phrase “Checkout”, and then set your translated string (as follows).
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There are plenty of YouTube videos that shows the complete process of creating lang files and then updating the phrases in them.
Note: When changing mini-cart’s lang phrases like “Checkout”, make sure to clear the cart and re-add the products; this way, you’ll not be seeing the cached version of the particular section.
Best!