Should I sell? Could use some help?!?

I purchased 25 shares of Marathon Oil at $5 during the Pandemic. The shares are now worth almost $30 each. This is the highest it’s been in over 5 years. Should I sell them? I’ve never sold any of my stocks and I’m up on a lot of them. Although I don’t have a ton of shares. I only just got into the stock market during the pandemic and am still learning. Thank you!