verify debian12 signature

"Juan Manuel ." <[email protected]>
Newsgroups gmane.linux.debian.devel.cd
Message-ID <PAXP251MB03789EBAFC041CB131E66281C3C02@PAXP251MB0378.EURP251.PROD.OUTLOOK.COM> 
Hello my Name Is Juan. I have downloaded the latest version of debian12. I have the GNU4win program with kleopatra but I don't know how to check the digital signature. I have tried everything, I have watched videos, I have read the official documentation, but it is very complicated to understand. You can help?
Thank you
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