It’s happen when you go to the checkout page and this is popular question.
To fix it, please follow this official guide from Shopify https://help.shopify.com/en/manual/payments/currency-formatting
Usually Shopify support will always say to contact the theme owner but actually it depends on the Shopify dashboard configuration, not from the theme side.
- From your Shopify admin, go to Settings.
- Click Store details.
- In the Store currency section, click Change formatting.
- In each of the fields, replace
{{amount}}with the currency format that you want to use from the options table. - Click Save.
And
- {{ amount }} => 1,134.65
- {{ amount_no_decimals }} => 1,135 (Rounded)
- {{ amount_with_comma_separator }} => 1.134,65
- {{ amount_no_decimals_with_comma_separator }} => 1.135 (Rounded)
- {{ amount_with_apostrophe_separator }} => 1’134.65