Dear candidate

First  of all congratulations for getting 84th rank in KIITEE 2020 which is not easy and you must have struggled a lot to achieve it so, as you asked you will be able to get a seat in BCA as the cutoff for BCA will be around 900 or below and the cutoff in the previous year 2019 is 925 and this year too it will be around that so, with 84th rank you sure can get a seat in BCA visit the below mentioned link for knowing cutoff trends of other courses

https://university.careers360.com/articles/kiitee-cutoff

All the best

Hope this Information is helpful