What are the factors impacting ones credit score

I don't know why my score is changing everytime I check its never the same.

There are many factors which affect your credit score but won't keep changing frequently as you said. And by the way who you are checking your credit score, by paying fee or asking someone from banking sector to do favour for you ? Also, why you are checking credit score ?

I simply wanted to know my credit score there is no specific purpose for this. I had applied once and had a score of 822 and now its come down to 810. I am using the same accounts and making payments on a regular basis. I had used CIBIL website to pull out the report. Now I have used a freescore link which I found on google.

There is no way to get CIBIL score scrapped from cibil website, nor you can get it for free. Deepali Mohite, we have removed the link you provided as that clearly accounts for spamming. You are allowed to add link to your website in signature, please see rules and regulation for that.