hi D. Gautham

yes , NTA will release the result of JEE mains 2020 january session result on 31st January 2020. It will contain your percentile. After completion of April session , Both the result will be compared and the one (if you have given both ) with high score will be considered. Then according to the percentile you can go for further admission procedure. For further information you can refer the link below: https://engineering.careers360.com/articles/jee-main

Hope it helps:)