the purchase of the app gives you access to a hosting?
No, but you can use https://blocshosting.com for specialised blocs hosting.
Be advised blocshosting .com mentioned above is not directly affiliated with Blocs app, its a 3rd party provider.
No, but you are free to pick and use any web hosting provider that you desire.
There is nothing really specialized needed to host Blocs created sites. The app uses standard HTML CSS JS, along with PHP for its mail form. So as long as PHP is supported on your hosting choice you should be fine as long as they meet the rest other criteria, features, price, performance, support, etc.
can i do it in godaddy? and how can i do it?
You can use any web host, including GoDaddy. As mentioned in another thread I think there are better options though and you don’t have to spend a fortune but very cheap web hosting can often be disappointing with less reliability.