Note: I’m using Google Pixel 4a (Android 12).
The Google Play Store app updates itself by default.
However, if, for some reason, you don’t have the latest version, you can force the Play Store to update itself, and here’s how.
How to Update Play Store to Latest Version
Open the Play Store.
Hit the profile picture on the top right.
Select Settings > About.
You can now see the “Play Store version.” Besides “Version,” you can see the version of the Play Store you have.
Hit the “Update Play Store” option.
If your Play Store isn’t up to date, it’ll be updated. Otherwise, you’ll see a popup notifying you it is up to date.
Thanks for reading.