Router password

[#1]

I’ve lost my card with the router password on. Is there anyway of finding out what it is. It’s just the one on the card as I haven’t changed it b

[#2]

Is there not a sticker on the router itself too?

(I am not round my sisters at the moment, so I can't check).

[#3]

Hi.
Just had a look and there is thank you. It’s on the bottom of it. Didn’t even think to look for it just thought it was the little card thing😂. Thank you.