It's often used in professional settings, but it can also be used in personal contexts.
Here are some examples:
* "I'll touch base with you tomorrow to see how the project is going."
* "I'll touch base with the team next week to discuss the new strategy."
* "I'll touch base with my parents to see if they're coming to the party."
The phrase likely originated from baseball, where "touching base" refers to a runner safely reaching a base on the field. In a metaphorical sense, it means establishing contact or reaching a point of agreement.