Technically speaking, it's prohibited by traffic law, but in practice a lot depends on the time of day and your luck with the officer. The main thing is not to drive in the dark, especially if you need to go on the highway or in heavy traffic. During the day the risk of a fine is lower, but it still exists.
If you're planning to get to the service station during daylight hours, try to drive more carefully: slower, with good distance, and no sudden maneuvers. You're already less visible to oncoming and side traffic anyway. Use your turn signals more actively so other drivers understand your intentions ahead of time.
But here's what you should remember - if you get into an accident while driving with one headlight, your insurance might notice the malfunction and make the claim more complicated. They won't necessarily deny it, but they will dispute it. So if you have a chance to postpone the trip until evening or find a ride during daylight, that's safer. And to get to the service station - you can call a taxi or get a tow truck delivered, it's cheaper than dealing with an insurance claim.