@kevitho 20 reps in one set. I usually warm up, and then the first working set I'll try to hit my rep max. Right now I'm doing 185lbs for 14 reps, so my next session I'll be going for 185 for 15 reps on my first set. Then I'll do one or two additional sets but I'm less concerned about how many reps I can get and more focused on slowing down, good technique, and getting a good pump.
So for you, you'd warm up, and then on your first working set try to do 130 for 9, then your other two sets you can do whatever really (can go for 8 or 9 there as well, or do paused reps. Anything that is hard and gets a good pump). Once you can do 9 reps, try to go for 10 the next session, then 11, etc. Eventually you'll work up to 130 for 20 reps, at which point you'll know you can bench around 215lbs if you wanted to test your 1 rep max.