Below query can be used to find object level permission of user database in SQL Server.

use <DB-- replace database name here
go
select @@servername as Server, db_name() as 'Database', su.name as 'UserName', so.name as Object, permission_name as Permission 

Below query can be used to find object level permission for specific user in SQL Server database.

use <DB-- replace database name here
go
select @@servername as Server, db_name() as 'Database', su.name as 'UserName', so.name as Object, permission_name as