What’s a good method of showing user progression of a dynamic questionaire with a varying amount of questions? [duplicate]

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What are the best practices around showing the length and stage in a questionnaire, where the length of said questionnaire changes and branches dynamically based on answers?

I'm going to create a questionnaire where the user sees one question at a time.
I want the user to get some sort of sense of how much longer they have and their place in the process but without misleading them.
I don't want them to think a single questionnaire could have 50 questions to answer, but to give a tangible number.
They could have to answer 7 questions or it could have 15 questions for them to go through depending on their answers.