Both Simple Present and Present Progressive are two forms of Present Tense.
As you may be knowing, we have three tenses in the English language: Present Tense, Past Tense, and Future Tense.
All these tenses have four forms: Simple, Progressive, Perfect, and Perfect Progressive.
Elaborating the answer to your question,
Simple Present tense is used when we have to talk about universal truths and the activities which happen on a regular basis.
For Simple Present Tense, we follow the rule: Subject + First form of the verb + Object.
Some examples are as follows:
1. Sun rises in the East.
2. I take bath daily.
3. I watch TV in the evening.
4. Rinni dances well.
Present Progressive, on the other hand, is used when we are talking about an activity which is going on at the time of speaking.
For this tense, we follow the rule: Subject + First form of the verb + ing + Object.
1. This boy is playing like a star.
2. Why are you writing a poem?
3. She is cooking for me.
4. I am going to meet my friend.