Railcards?

I need some help/advice… so I am eligible to get a 26-30 railcard and I have always gotten a railcard through Trainline as that’s what I am most used to and I enjoy to use.

I am going to Scotland at the end of NOV till 2nd December and I have checked prices with a railcard & without a railcard and with a railcard it is priced cheaper.

I am wanting to get travel more frequently as I can on the train so I’m wondering would a railcard be worth me getting one or not?