How long should my brother get for 4 counts of unlawful entry, 4 counts of theft, 1 count of receiving stolen property?

This depends on the facts of the case, his prior record and the judge. Without more detail I can't say.

Without the facts of the case, including whether or not a gun or weapon was used in the commission f the crime, and what, if any, prior criminal history your brother has, I cannot say.

That is impossible to answer. The sentencing judge considers many things, such as criminal history and the facts of the case, employment history, alcohol/drug abuse issues to name a few. What he can potentially GET if convicted of all the charges is easier to determine, but I would still need more information. If by "unlawful entry" you mean a residential burglary, he would be looking at a maximum exposure of 10 years on four separate counts (and four strikes). But even that is stretching what can accurately be stated because the facts - and the applicable law - add into the equation. If those are 4 counts of second degree burglary ("unlawful entry" of a store, let's say and not a residence), he is looking at a maximum on those counts of 5 years (with no strikes). Get him a good lawyer - he's going to need it!