I get the jist of it. With context and congnates and some basic linguistics I can understand what is being said. I feel like I can also read it to a certain degree. If you are a native English speaker and want to feel what’s it’s like look up someone speaking “Scots” is a sister language to English and probably the closest to English without also being English.

A fifth and a handle are two different sizes. A fifth is 750 ml ≈ .2 gallon ( US customary) while a handle is 1.75 L ≈ .46 gallon ( us customary). note 1 gal ( US ) = .8gal ( imperial )