You’re never too old to learn how to play the trumpet. This is an interesting horn that is popular with a wide variety of potential musicians and can work with many different musical styles from classical to marching band to many various forms of jazz. Look around to see how many options you have for getting lessons to play the trumpet.
One of the best steps you can take to make sure you get the best trumpet lessons that match your specific style of learning is to try out a few different teachers and just see if there is a particular style of learning that really clicks and sticks with you more than others or a teacher who seems to get the most out of you. This doesn’t necessarily mean the one you like most, but the one who helps push you the most to get better and measurably improve.