You can have more than one account provided you are not using them to sell the same things from different shops.
Having more than one shop selling different things is allowed (for example, one shop for handmade goods and one for supplies). To have two accounts you will need two different usernames and email addresses.
Can I use the same Paypal and Stripe account for more than one account?
Yes, you can use the same Paypal address and Stripe account for more than one account.