I'm trying to split out the two numbers in the cell into separate columns
I've tried "text to columns", using the delimitator "space" but it removes the second number in each of the cells leaving me with only the first number.
Not sure what you did, but it works on my end, please see Demo:
Data
Tab --> First Step --> Delimited
--> NextSpace
--> NextText
you can also keep it General
Or Use TEXTSPLIT()
=TEXTSPLIT(A2," ")
Or Single Array formula:
=TEXTSPLIT(TEXTAFTER(" "&A2:A24," ",{1,2})," ")