SQL Server to AWS RDS please help !

I’m in a company based out of Cali and our Cloud Engineer quit abruptly he was suppose to attend a meeting with a vendor to migrate our on prem SQL Server to AWS RDS. I’m screwed I don’t know anything about Databases just the basics.

What info should I find out about the DB before the meeting…?

Possible info Examples:

Size of DB? What it talks too? Disk Space server hosting it has? Ram? How do we back it up?