About maximum number of Contact fields

Hello Community!

I have not been able to find information about the maximum number of Contacts fields in the documentation. When I consulted Oracle Support, they referred me to the forum to look for similar topics.

1. What is the maximum number of Contacts fields that an Eloqua instance can have?
2. Does this amount depend on the plan you have?
3. Can extra fields be requested if they are necessary?
4. Is there a maximum number of Contacts that can be stored in Eloqua?

I would appreciate any guidance you can give me.