Sentence correction

Yes we have quoted 2 hours for below
Correct above sentence

The sentence can be corrected as:

"We have quoted 2 hours for the following."

Regarding 4 hours quote this is for below , I think this is differ from above
Correct above

The corrected sentence could be:

"Regarding the 4-hour quote, this is for the following, which I believe differs from the above."

Code is added to staging server.
Correct above

The corrected sentence would be:

"The code has been added to the staging server."