You can include or exclude your domain from AutoSSL.
If your domain is newly created, wait for a few hours, so cPanel can automatically install an SSL on your domain. However, if an SSL is not installed on your domain even after 24 hours, first check the last log of AutoSSL from cPanel >> SSL/TLS Status >> Certificate Status.
Log into your cPanel account.
In the Security
section, click on the SSL/TLS Status
Under domains, choose the domain you wish to include and then click on the "Include x domain(s) during AutoSSL"
button, and your selected domain/sub-domains will be included in AutoSSL.
Later, should you wish to exclude your domain, which you included, under Domains
text tick mark the domains you want to exclude and click on the "Exclude x domains during AutoSSL"
button and your selected domain/subdomains will be excluded during AutoSSL.
Only domains included by you can be excluded. It means you cannot exclude domains unless they are added to the inclusion option by you.