What does the bracket with numbers mean in the tags?

i think it's the no. of works/series which has been given that certain tag idrk for sure tho

Ty!!
Btw, whose in ur pfp?

they're one of my fave ships! IvanTill from Alien Stage, a web musical animated series on yt! be sure to check them out (ps: prepare some tissues as well)

Oh no not the tissues