Congratulations ,yes you will get NIT ALLAHABAD,actually it is NIT-Prayagraj now .You can choose any course there as your percentile is awesome i prefer you to go for computer science and engineering as it has wide scope,if you want to go for IT sector but if you want to go for government sector then chose either electronic and communication engineering or electrical and electronics engineering

With 99.02 percentile in JEE Main, you may expect your AIR to be around 10000-12000. With this rank you have high chances of getting NIT-Allahabad. At NIT-Allahabad, with this rank, you may get Electrical Engineering, Mechanical Engineering, Chemical Engineering, Biotechnology.

With this rank, you may also get numerous programs at IIIT-Allahabad.

For further information about college options available, you may use the B.Tech companion available using the link given below:

https://www.careers360.com/btech-companion

Hope it helps.