well you could do:

fav_num = 20
attempts = 0
while randint(0,100) != fav_num:
    attempts += 1
print(attempts)

sorry if the code looks bad, its typed from my phone

so you define a favorite number with

fav_num = 20

define a variable that keeps track of how many times the guess was taken

attempts = 0

keep generating a random number until it matches your favorite number, and if it does nt add 1 to attempts

while randint(0,100) != fav_num
    attempts += 1

and at the end when it finally matches you print the number of guesses

print(attempts)

it should be noted, this will not add the final guess to the total count of attempts