how much storage do I have and how do I increase the amount of storage?

This is a user to user forum: you have to post a question and just wait for someone who can answer to see it. This can take some time. Posting every minute isn't going to help.

As to your question, you can check your iCloud storage at https://www.icloud.com and click 'Account settings' to see the amount of storage and its use.

To increase your iCloud storage please see Upgrade your iCloud storage plan - Apple Support

This storage is online at iCloud: it is not on your device. The storage on iOS devices cannot be increased.

See this article for how to check how much storage you use in iCloud:

Manage your iCloud storage - Apple Support

This might also explain some:

What's the difference between device storage and iCloud storage? - Apple Support

Good luck!