Doubts https/SSL

[Atrevido]

Free SSL has the same value as SSL paid related to rank in google?

 

[leto12]

Yes, for SEO there is no difference between free SSL with letsencrypt or another paid certificate.
For the security, it depend only if the certificate is properly setup. For that use https://www.ssllabs.com/ssltest/index.html to check your certificate security level or if you have issue with it

 

[NuWebHosting]

If your wondering if it's correct or not, just cut to the chase and do it right. Remember you're building value into what you have not anything else. It'll help you in the long run.