My opinion on your queries are as under:
Will there be any arrest now based on 498a and any affect for my job?
Opinion: yes, the arrest can be possible but after the permission of senior police official like ACP/DCP of area and if you are in Govt. Job and you have arrested and sent to jail for 48 Hours then your job can be lose.
Do we have to agree for the amount they asked ?
Opinion; Its depend on your capicity, if you are ready then ok otherwise fight the case on merit.
If i file a divorce petition will there any relief from 498a completely?
Opinion: No, there is no relief, in 498A case.
advise: It will be better to apply for Anticipatory bail before session court or high court u/s 438 of Cr.P.C. and after getting bail fight the case on merit and try to get acquittal.
Feel Free to CAll