You have 2 options: create a Phantom wallet or create a wallet with your SSO account (Google, Apple).

Phantom wallet setup:

1. Head to https://phantom.app/.

2. Click on "Download".

3. Select the browser you are using.

4. Click on "Add to Chrome/Brave/Firefox".

5. Hit "create a new wallet".

6. You will be asked to create a password for your wallet.

7. They will give you your passphrase (which consist in 12 or 24 words), save it somewhere it's absolutely safe (in a password manager for an example.

To create a wallet using your Google account, Apple account or an Email, simply clic on the corresponding service: