Exam

It depends in which college you want to get into. 58% is too less to get into top or most reputed colleges.
lemme know where you want to get into.

Yes, you may apply.

It is nearly above 150 marks in JEE Mains and more to get admission in PDPU in petroleum engineering.

Minimum score required to get admission in IIM-A is nearly between 90.00 to 100.0 percentile.

Yes,of course it's a good score and definitely you can apply with this score for ITM, Navi Mumbai. ITM stands among top 100 B-Schools at 15th position. It's placements are at it's best. So I would suggest you to apply for this college.

Yes, AMAT is not exempted if you have written the NMAT exam.