In your store management area, go to Store settings → Checkout, and you'll find the following sections:
Checkout Policies
Here, you can add links to your website's Terms & Conditions and Privacy Policy pages:
Learn more: How to Create Legal Pages
This way, your clients will be asked to agree with the policies before proceeding to payment in the checkout:
Custom Options
Here, you can enable additional fields for collecting additional details from your clients:
Require phone number at checkout: choose whether a client is required to insert the phone number when making a purchase
Add a custom field to the checkout: collect more information from your clients; you can also make this field required
Checkout Language
Specify the preferred language for your store: it will automatically reflect in the shopping bag, checkout, and invoices.
NOTES:
You can enable or disable the shopping bag in the website's header settings
After making any changes, save them and update your website