Tips for Photography in a high school gym?

I’m a sports photographer who usually shoots outdoor things like baseball and soccer. I’ve been asked to do a cheerleading competition in a high school gym by a family friend. I usually decline these offers cause it out of my element but given it was a family member who asked I felt obliged. What are the best settings for an event like this. My equipment: Canon R50, kit and 55-210 mm lenses