Settle right up till now (2,3)
I believe the answer is:
so far
'till now' is the definition.
(I've seen this before)
'settle right up' is the wordplay.
I cannot quite see how this works, but
'right' could be 'far' (similar in meaning) and 'far' is present in the answer.
The remaining letters 'so' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for so far that I've seen before include "To this point" , "to a certain degree" , "till now" , "Up until the present moment" .)