You either need to hard code the values, or use something like metafields to expose the info in liquid.
Tax data is not exposed in liquid except if a variant is taxable, and limited places for amount on line items where tax has been actually calculated, or a id or status.
https://shopify.dev/docs/api/liquid/objects/variant#variant-taxable
https://shopify.dev/docs/api/liquid/objects/cart#cart-taxes_included
DEPRECATED https://shopify.dev/docs/api/liquid/objects/shop#shop-taxes_included
https://shopify.dev/docs/api/liquid/objects/checkout#checkout-tax_price
https://shopify.dev/docs/api/liquid/objects/tax_line
https://shopify.dev/docs/api/liquid/objects/cart#cart-taxes_included
https://shopify.dev/docs/api/liquid/objects/company_location#company_location-tax_registration_id
https://shopify.dev/docs/api/liquid/objects/customer#customer-tax_exempt
Also see the many topics on VAT price displays.