how much macbook pro 13 bottom bazel replacement costs

We are not Apple but rather end users like you. We cannot quote prices, and pricing can vary with where you live. Contact Apple Support using the link at the upper right of this page, or visit an Apple Authorized Service Provider in your area for a quote.

If it is a 2016+ model, then this will require replacement of the entire Display Assembly. You could try putting some black electrical tape over the crack to help hold it in place and to hold the glass together and protect the internal circuitry from dirt & liquids. Chances are the crack will get worse over time.