With 33781 rank, chances in VIT Vellore main campus are low, but you might get:

VIT Bhopal or VIT AP in lower-demand branches.

For VRSEC (Vasireddy Venkatadri Institute of Technology), you may get some branches depending on category and local rank in AP EAMCET.

With a JEE Main rank of 33,781, you have a fair chance of getting admission in VIT (especially Vellore or Chennai campuses) for branches like Mechanical, Civil, or Production. CSE or ECE would likely not be available at that rank in the top campuses.

As for RVCE (R.V. College of Engineering), your JEE Main rank is not considered for admission. RVCE admits students mainly through KCET and COMEDK exams. So with just your JEE rank, admission to RVCE isn’t possible.