Mam,
I want to study B.tech in c.s,software or robotics.

Hi The best countries to study B.tech is USA, Singapore, Germany. To have an overall idea read https://www.careers360.com/Universities/Top-destinations-to-study-engineering-abroadSome of the best universities for B.tech in CS are, University/InstituteCountryMassachusetts Institute of Technology (MIT)United StatesStanford UniversityUnited StatesUniversity of OxfordUnited KingdomUniversity of CambridgeUnited KingdomHarvard UniversityUnited StatesUniversity of California, Berkeley (UCB)United StatesNational University of Singapore (NUS)SingaporePrinceton UniversityUnited StatesThe Hong Kong University of Science and TechnologyHong Kong S.A.R., ChinaThe University of MelbourneAustraliaUniversity of California, Los Angeles (UCLA)United StatesUniversity of EdinburghUnited KingdomUniversity of TorontoCanadaAustralian National UniversityAustraliaNanyang Technological University (NTU)SingaporeUCL (University College London)United Kingdom HOpe this helps.. You can post questions if you need more information.