It actually depends on the field you are going to pursue.

For instance, if you opt for the top most branch right now in engineering which is none other than CSE and other branches similar to it like AI & ML, IT etc.

You need to get a minimum rank below 500 for these branches and for others below 2000 is a good enough rank to get into it.

As you are OC candidate you need to have a good enough rank to get into the topmost government college of Telangana.

The score you require to get a rank below 2000 would range from 80-100 out of the 160 marks.

All the best!!!