google sheets – Sum of multiplication on cells?

Sample image of that kind of thing I need

I know it's not very professional, but I'm very new to Google sheets and spreadsheets in general.

So, if I know that the rank 4.3 leather is worth 6 points in the contest, some one brings 739 and 589 others.
Is it possible to type 739 and 589 in the table on the right and to define a formula allowing the sheet to calculate the number of points earned by this person for this resource? Then I would just manually delete the values ‚Äč‚Äčonce I have a final number and start the next person.

If anyone has any tips or favorite places to look for where I can learn to do things like this for myself, it would be so amazing. I've started google but I find jargon and terms a little intimidating!