I got 321 on GRE and 96 on the TOEFL exam, and I have a 5.5 CGPA and backlogs. Can I get admission in BTech?

Your GRE score is decent. But, when it comes to CGPA, a lot of universities have it as an eligibility criterion, and it is always between 6 to 8. So, if you desire to get into a university in the US, there is a very good possibility. Although the US may not take, different international locations will be given your CGPA. Before making any decision, it is encouraged that you go to the faculty's website and check their eligibility criteria. You can contact a counsellor too. Hope this helps. All the best!

Eligibility and requirements
Suppose you prefer to pursue BE/B. Tech abroad, you know about the manner of making use of BE/B.Tech colleges abroad.

1. Academic requirements
Prominent faculties choose candidates who have performed their 12th general with high-quality ratings from a diagnosed education board. Other requirements are stated below.

It would be best if you had accomplished your twelfth widespread from a diagnosed schooling board for reading an undergraduate degree.
Language proficiency checks IELTS, TOEFL, PTE, and standardized tests like SAT or ACT.

2. Application requirements
Apart from your educational documents and transcripts, there are some different application requirements which are mentioned below:- 
Resume
Reference letters/Letters of recommendations
Essays (as demanded through the colleges)

3. Application process
First of all, begin studying about faculties imparting BE/B.Tech abroad. If you have determined the USA earlier than choosing the college, you can search about the schools according to your profile. If you have not selected the USA before deciding on the college, you can examine a few schools on elements like tuition fees, living costs, and eligibility criteria. 

B.Tech Specialization
Engineering is applied in all fields, and the majority of the professional exercise where technical competencies are required. The most beneficial engineering streams are
Chemical
Aeronautics
Automobile
Computer Science
Electronic 

Top universities offering BTech:

1. California Institute of Technology, US
2. Stanford University, US
3. University of Cambridge, UK
4. Harvard University, US
5. University of Oxford, UK

So Yes, you are eligible to appear in the GRE examination after completing your B. Tech direction with one backlog.