SQL & PL/SQL :: Query To Get Total Points From Various Factors

I am trying to calculate the total points of each customer

create table Customers(Customer_no number,revenue varchar2(30),Regularity varchar 2(30)
);
insert into Customers values(1,'25','2');
insert into Customers values(2,'50','3');

Table customers:

Customer_no, revenue, regularity
1,25,2
2,50,3

create table Points(ponts ID number,Factor varchar2(30),Weight number);

insert into Points values(1,revenue,2);
insert into Points values(1,Regularity,4);

Table points
Points ID,Factor,Weight
1,revenue,2
1,regularity,4

So for customer_no: 1

revenue is 25 * 2(weight for revenue ) =50
regularity is 2*4(weight for regularity) =8
Total =58

So for customer_no: 2

revenue is 50 * 2(weight for revenue ) =100
regularity is 3*4(weight for regularity) =12
Total =104