Canada Visa

Please do not go to Canada with 5.5 in any module. If at all there arises a case of visa rejection, you might invite a loss of about 1 Lacs. It's better to re attempts
IELTS exam and get a better score card. Also get some small work experience. Nothing major since you just passed class 12th. Also, you have a gap of more than 1 year. Show proof to close that gap.

Yes, the study gap would be a major problem. But, it must be okay, if you did something productive during the gap, eg work. You can give it a try. But, I would suggest you not to keep your hopes up. There's a high chance for visa rejection if you cannot provide proof of activities done during your gap.

Eligibility: To qualify for a Canadian study permit, you need to:
Be enrolled at a designated learning institution
Show proof of funds to cover your tuition fees, living costs, return travel
Have no criminal record
Be in good health (you might need to complete a medical exam)
Prove that you will be leaving Canada after your studies.

You can consider following colleges:
Cantennial college
York University of Ottawa
Saint clair college
Sheridan College
Carleton University

Your IELTS score isn't good, as most of the university requirements is minimum 6.5. So, take the IELTS. After that, you can apply for Masters by any consultancy who have proven records of successful visas.

Hi,
Your writing IELTS score isn't good so there's no chance of you getting admission, as you need at least 6 bands in each component and minimum 6.5 overall. Retake the exam then there's a chance.

There are some universities in Canada that may accept your admission.

Hi Aisha,
This link will help you my dear:
https://studyabroad.shiksha.com/canada/universities/university-of-alberta/doctor-of-dental-surgery-dds
All the best.

Yes, you need to provide them your IELTS scores and tuition fee if they had requested that in the offer letter. I suggest you go for any good consultancy they will help you with that and remember, there are so many fraud agencies so be aware of them.