Hello,
This is Gerard Santinelli and I wish to know if Avast provides one-year free subscription without any charges?
Warm Regards.
avast free is FREE 
just register for one year … and renew evry year
avast FAQ https://www.avast.com/en-eu/faq.php
FAQ videos https://www.avast.com/en-eu/faq.php?q=video#searchForm
register avast free https://www.avast.com/en-eu/faq.php?article=AVKB9#articleContent
In avast free it has a Registration - normally when the Subscription (license) is mentioned it relates to paid versions of avast. Then there is the restriction of avast free to home and non-business use.
So we need to be clear what version you are considering - avast free, no problem - and if it is for home and non-business use no problem.