I got 64.05 total nta score What is my rank and total marks obtained.

Hello Aspirant. First of all there is no system of percentile to qualify JEE Mains 2019. NTA has officially launched the answer key and your response sheet. You have to login to access your response sheet and then you can match it with the answer key to have an approx idea of your score.

You can also check the rank predictor to have an idea of your rank from the link below.

https://engineering.careers360.com/jee-main-rank-predictor?icn=JEE_Main_rp&ici=JEE_Main_article_view_sticky

I would recommend you to wait for the official declaration of cutoff. Meanwhile you can check the previous years cutoff score and the trend from the below link.

https://engineering.careers360.com/articles/jee-main-cutoff

Hope this helps. 

Good luck!