If you are interested in any problem I encourage you to go and search around in the first instance, to discover what has been done and if it has been solved. If you find any useful references that you think should be added here, please let me know.
I also don't plan to include every open problem that Erdős ever posed; he was very prolific and wrote over 1500 papers, many of which had open problems, and wrote many letters. My (personal and subjective) aim is to include all of the interesting Erdős problems. For example, sufficient (but not necessary) conditions for a problem being included are Erdős including it on a standalone published list of problems, or being on record as offering a monetary value for its solution. A usually necessary (but not sufficient) condition is that the problem be reasonably understandable and interesting as a stand-alone statement (e.g. stating at the end of a long technical lemma in a long technical paper 'can this be improved?' does not count).