How to check certificate Version

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is: app7.juvlon.com

I ran this command:

It produced this output:

My web server is (include version): nginx

The operating system my web server runs on is (include version): ubuntu 18.04

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don’t know): yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel):

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot):

I’m not exactly sure what “certificate version” you’re meaning, but app7.juvlon.com redirects to app6.juvlon.com, which serves a certificate with a serial number beginning with 03:05:68.

According to https://crt.sh/?id=3226222981, for that certificate I can see the following:
Version: 3 (0x2)

app7.juvlon.com is forwarded on app6.juvlon.com, but actually i want to know that what is the version of certificate.

This is a highly strange question IMO. What’s the question behind the question?