Hi there Im using Macbook Pro Late 2013 model, is MAcOS Big Sur available for this model ?

Your 'build model year' seems to be listed on this Support page:

• macOS Big Sur is compatible with these computers - Apple Support

https://support.apple.com/en-us/HT211238

• How to upgrade to macOS Big Sur - Apple Support

https://support.apple.com/en-us/HT201475

Does your MacBook Pro have Mojave or newer macOS installed?

See Step 4, in above ^ read to see if this helps install Big Sur in your Mac.

Download Big Sur macOS11.x:

"If you're using macOS Mojave or later, get macOS Big Sur via Software Update:

Choose Apple menu  > System Preferences, then click Software Update.

~ Or use this link to open the macOS Big Sur page on the App Store:

Get macOS Big Sur. Then click the Get button or iCloud download icon."

[Perhaps Catalina could be better suited, it's rather new still & secure?]