right click on the link and choose open in another tab.
once there choose count up. fill in your information.
with your page open, choose edit profile below your avatar and then way down at the bottom will be the boxes like mobile phone .
copy the code the link page gives you by right clicking on it. it will turn blue, choose copy and your computer will save it to it's "clipboard".
right click which box or location on your page you want it in and choose paste.
then hit save at the bottom of your page
there may be other count up clock links but i did a search recently and this was the only one i could find that still worked.