[Vuejs]-How do i charge with payment method like paypal/stripe in Vue js? Do i need a server like express?

PayPal Checkout will get that done for you: https://developer.paypal.com/docs/checkout/#

That doc guides you on setting this up directly in your JS app, or you can also use a server back-end with PHP or something else if you prefer.

This will give you PayPal, PayPal Credit, Venmo, and direct credit cards all in a single checkout integration.