You are allowed to publish an unlimited number of apps on both marketplaces using the same developer account. Developers with hundreds of apps in their portfolios exist.
You shouldn’t encounter any problems as long as you don’t oversaturate the app store with copies of your own software.
Neither stores define any limits on the number of apps you can publish under the same developer account. There are devs who have hundreds of apps under their developer accounts.
As long as you are not spamming the app store with similar applications, you shouldn’t face any issues.