What should I do with money in thrift savings plan

I’m a 23m I got out of the military last year. I’m doing really good financially but, haven’t been doing anything with the money in TSP. I have around 15k in it. I was thinking about transferring to a high yield savings account. I plan on getting a job with a pension. I also have investments in Robinhood as a separate thing and I invest every month. Any advice?