if a student gets a rank below 1000 in apicet can he/she gets a free seat for MBA Or not?

your rank must be less than 1000 to get admission through apicet in Andhra university for MBA.
AP ICET 2020 College-Wise Marks vs Rank

Check the table below for a detailed analysis of the score required for specific ranks in the AP ICET. Candidates interested in admission to various colleges can also check the approximate AP ICET rank cut-offs for admission to various colleges offering MBA and MCA in Andhra Pradesh.
Marks Expected Ranks Colleges Category Available
160 - 141 1 to 30 A
141 - 131 31 to 70
130 – 121 71 to 100
120 - 111 101 to 200 B
110 - 101 201 to 350
100 - 91 350 to 500
90 - 86 501 to 1000
85 - 81 1001 to 1500 C
80 - 76 1500 to 3000
75 – 71 3000 to 10000
70 – 66 10001 to 25000 D
65 – 61 25001 to 40000
60 – 56 40001 to 60000
55 - 50 60000 above

Category A Colleges in AP ICET 2020
Colleges that accept 1 - 100 rank in AP ICET have been clubbed under category A. Here is a list of category A colleges in AP ICET.
Sri Venkateswara University - [SVU], Tirupati
Jawaharlal Nehru Technological University (JNTU), Kakinada
Sree Vidyanikethan Engineering College (SVEC), Tirupati
Sagi Ramakrishnamraju Engineering College (SRKREC), Bhimavaram
Sri Venkateswara College of Engineering - [SVEC], Tirupati

Category B Colleges in AP ICET 2020
Colleges accepting 101 - 1000 rank students in AP ICET have been categorised under the category B colleges. Check the list below for some of the popular category B colleges in AP ICET.
Andhra University (AU), Visakhapatnam
Dr Lankapalli Bullayya College, Visakhapatnam
Annamacharya Institute of Technology And Science (AITS), Kadapa
Lakireddy Bali Reddy College of Engineering (LBRCE), Krishna
Velagapudi Ramakrishna Siddhartha Engineering College (VRSEC), Vijayawada

Category C Colleges in AP ICET 2020
The colleges placed under category C are the ones that accept AP ICET ranks ranging from 1000 to 10,000. Given below are some of the top choices of candidates applying for category C colleges in AP ICET.
SRK Institute of Technology, Vijayawada
Madanapalle Institute of Technology and Science (MITS), Anantapur
Rajeev Gandhi Memorial College of Engineering and Technology Nandyal (RGMCET), Kurnool
Prasad V. Potluri Siddhartha Institute of Technology (PVPSIT), Vijayawada
Pydah College of Engineering and Technology (PCET), Visakhapatnam

Category D Colleges in AP ICET 2020
All of the other colleges accepting AP ICET scores have been provided with the D category. Candidates who have a lower rank than 10,000 can apply for these colleges through their AP ICET scores.
Vignan's Lara Institute of Technology and Science (VLITS), Guntur
Vignan's Institute of Information Technology - [VIIT], Visakhapatnam
Vasireddy Venkatadri Institute of Technology - [VVIT], Guntur
Shri Vishnu Engineering College for Women (SVECW), Bhimavaram
Sir C R Reddy College of Engineering (SCRRCE), Visakhapatnam

hope this is helpful