In order to access the services provided by GCP, you need to just create a free account on GCP.
You get $300 worth credit to spend it over a period of 12 months.
You need to provide your card details, but you won’t be charged extra after your trial period ends or you have exhausted the $300 credit.
Check this out to know how you could create a free GCP account: https://www.edureka.co/blog/what-is-google-cloud-platform/#CreatingaFreeAccount
Hope it helps!!
If you need to know more about Google Cloud, We recommend joining GCP Certification course today.