Ok I think you are confusing a few things.
You mentioned the sub in your first post.
I’m assuming sub is for sign up bonus or sign up welcome offer for opening the card.
Since do not currently have a SW card and have not received a welcome offer in the past 24 months (or in your case ever

) you will be eligible for the Welcome Offer aka sub.
The new offer is 100k points/miles after spending $4,000 in 5 months.
That offer is for any of the 3 personal cards.
The offer for either of the 2 business cards are 80k points/miles after spending $5,000 in 3 months.
The other that has been mentioned is the companion pass.
The companion pass allows a companion to fly with you for the cost of taxes.
Once the companion pass has been earned you will have access it for the rest of the year and all of the next year.
In order to earn the companion pass you have to get 135,000 points in a year. The amount of points resets every January 1st to 0 or 10,000 if you have a SW Credit card.
Now it sounds like you have a Chase Sapphire Preferred, Sapphire Reserve or Ink Preferred allowing you to transfer your Chase Ultimate Rewards to Southwest.
That is a nice feature but unfortunately none of those points will count towards the Companion Pass (CP).
To get you started towards the CP each of the 5 SW credit cards will give you 10,000 points towards the Companion Pass each year but are not valid for flights.
So by holding the card you need 125,000 points in a year instead of 135,000.
Welcome offers, everyday spending on the CC, flights on SW, shopping through the SW portal or dining at SW restaurants are all way.
If you can delay getting a personal card until August or September and delay your spending until January 2026 you will have a lot of time to get the remaining points for the CP in 2026 & 2027.
If you manage to get the personal card now you are on the clock now as if you took the whole 5 month period that you have to meet the spend and earned the rest of the points you would earn the CP in late December basically just giving you one year of CP.
Hopefully this helps.