Is the word going in the past tense or future tense or present tense?

Answer 1

The word going is a present participle and isn't in any tense at all. It is used with auxiliaries as in: * I'm going there tomorrow. * I shall be going there tomorrow. * Going right from here, you'll find the street is the second on the left. (Here going is equivalent to If you go ...)

Answer 2

The word "going" can be present tense (e.g. "I am going to the store"), past tense (e.g. "I went to the store"), or future tense (e.g. "I will go to the store"). The context of the sentence will determine which tense is being used.