RGPH 10 eamer criteryon 2... 100,000 BTU.. 80%... circulating fan working... draft inducer fan on... the gas don't come on.. so... no heat... please help today... please... thank you

You need to provide more info , it could be flame sensor it could be bad hot surface igniter it could be bad spark ignition control and so on. If you don't know these parts and what they do you probably don't need to be working on your furnace no offence .