Google announced that they will begin provisioning GA4 accounts for sites who have not yet taken action, starting in March 2023. This will consist of a basic setup closely matching your existing UA account.
You can look at your property ID to see whether you are using Universal Analytics or Google Analytics 4. Universal Analytics property IDs start with UA and end with a number (UA-XXXXXXXXX-1), whereas Google Analytics 4 property IDs have only numbers (XXXXXXXXX). See example pictured.