How many days do you hit the gym?

4 for maximum benefits. Recovery (big word) happens out of the gym

Four times a week - power lifting. Recovery - as already mentioned - is a BIG part of getting stronger.

i like the 5, 5, 5, 6 TRAINING PROGRAM, here how it works 1 = back, biceps, forearms
2 = legs
3 = chest, shoulders, triceps
R = rest day
Here’s how the 5, 5, 5, 6 program repeats itself:
CYCLE ONE – Train 3 days out of 5
Mon – 1
Tues – R
Wed – 2
Thurs – 3
Fri – R
————–
CYCLE TWO – Train 3 days out of 5
Sat – 1
Sun – R
Mon – 2
Tues – 3
Wed – R
—————-
CYCLE THREE – Train 3 days out of 5
Thurs – 1
Fri – R
Sat – 2
Sun – 3
Mon – R
—————-
CYCLE FOUR – Train 3 days out of 6
Tues – 1
Wed – R
Thurs – 2
Fri – R
Sat – 3
Sun – R
REPEAT AGAIN STARTING AT CYCLE ONE ABOVE
The cycle repeats itself exactly in the pattern every three weeks providing you don’t miss. So, every 3 weeks you train each workout 4 times, you have 9 rest days and 12 workout days.
Notice you always have Fridays off. And you can always have the same day off depending on when you start the cycle. Start in on Monday and every Friday off. Start on Tuesday and get every Saturday off. Start it on Wednesday and get every Sunday off, etc.
Of course, there are other ways to arrange your workouts in this three way split, but why do a three way split in the first place?
1) Since you divide your body into three sections instead of two you can do more work for each section. You have longer to recuperate between each time you work a specific part of the body.
2) It’s easier to tolerate only a small part of your body being sore from exercising instead of your entire body or entire upper body being wiped out.
Footnote: Actually instead of training three days in a row and resting the fourth, I’d do the 5-5-4 day cycle, the 5-5-5-6 day cycle should produce more growth because there’s more rest so you’ll be stronger each workout and be able to train heavier.

I go 5 days a week. Alternating workouts