No, it is not a correct sentence. The pronouns 'her' and 'him' are objective pronouns, used for the object of a verb or a preposition. Your sentence has her and him as the subject of the verb 'have'.
The corresponding subject pronouns are 'she' and 'he'. Corrected sentence:
Did she and he have a disagreement today?
However, when using the names of the people for a compound subject, both names are used, for example 'Jane and John". But when pronouns are used, the two people are usually referred to in the plural as 'they'. Better sentence:
Did they have a disagreement today?
I prefer: 'Delivery is scheduled for today.'
Yes, that sentence is grammatically correct.
It's the terrible weather
The sentence "Lets get into something formal today" is not correct grammar due to improper use of preposition.
Meet with Scott and I
My sister and I had a disagreement :)
Example sentence - When in disagreement with others David does not know how to compromise.
They had a verbal disagreement
"We were informed it will be corrected today" is a correct sentence. However, it might sound a little better to say "We were informed that it will be corrected today."
Yes, "by the end of today" is a correct way to refer to something that will happen or be completed before the current day ends.
meaning:to be in disagreement. This is not an argument against dissent and disagreement
I had a disagreement with my wife about what our safe word would be.
No, it is not.
I prefer: 'Delivery is scheduled for today.'
It is correct.
Yes, that sentence is grammatically correct.
It's the terrible weather