To display different currency price in different website for same product . You can follow these steps.
Step 1: Login to your Magento Admin account;
Step 2: Navigate to Stores → Configuration;
Step 3: Under the General tab, find the Currency Setup settings;
Step 4: Choose your preferred Base Currency, Default Display Currency, and
Allowed Currencies;
Step 5: Refresh your cache if you have previously set your cache settings to
enabled.
To display different price for different website.
Step 1: Login to your Magento Admin account;
Step 2: Navigate to Stores → Configuration;
Step 3: Click the Catalog tab and choose the Catalog section;
Step 4: Under the Catalog Price Scope, choose the Website option in order to
display different product prices on different websites.
Step 5: To display the same product in different currency units on different websites, you’ll need to go to Catalog → Products, click the names of the products you want to get listed on those sites, scroll down to the section called Product in Websites and leave a checkmark in front of the Names of the Websites you want those products to appear.
Let me know if it is helpful to you.
Thanks