The minimum term for which you can register a domain name is 1 year, the maximum is 10 years.
If you are starting the first project, take an inexpensive domain for 12 months. In the future, you will be able to use the auto-renewal function by specifying the period for which you want to renew the domain name. This option is useful for everyone who aims to work with the site for a long time and does not want to lose important data by accidentally forgetting to continue the service.