If something has an atomic number of 13 and an atomic mass of 26.98 how many protons does it have

13 Protons because the atomic number is the number of electrons and protons.
The atomic mass is protons plus neutrons because electrons are too small to measure.

13, the number of protons is the atomic number. If the number of protons ever changes you are at a dif element

Fake and a real . . . . . ..