You have to disabled Sales > Payment Method > Update Merchant Country to US
Then move to
Basic Settings – PayPal Express Checkout > Advanced Settings > Frontend Experince Settings > Features > Disable Funding Option Select PayPal Credit to disabled it.
Check this image and set setting according to hide button.
Reference : https://magento.stackexchange.com/questions/319341/magento2-how-to-remove-paypal-credit-button-from-product-detail-page
